Question Pool Periodic Table & Electronic Configuration

Periodic Table & Electronic Configuration - SAMAGRA Question Pool & Answers | Class 10 English Medium

Kerala Syllabus SAMAGRA SCERT SAMAGRA Question Pool for Class 10 English Medium Chemistry Periodic Table & Electronic Configuration

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Qn 1.

What is the oxidation state of Mn in MnCl2

(Oxidation state of Cl= -1)

  1. -1
  2. +1
  3. +2
  4. -2


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Qn 2.

Iron with atomic number 26 shows +3 oxidation state in chemical reaction.

a. Write the sub shell electronic configuration of Fe.

b. Write the sub shell electronic configuration of the ion formed.

c. Write whether the element can show different oxidation state. Justify?



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Qn 3.

Analyse the table above and answer the questions

  1. Which of the above is a first group element ?
  2. Which is the valency of R?
  3. Give the formula of the compound when P combines with R ?
  4. Which of the above shows different oxidation state ?

 

  • Answer)
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Qn 4.

Match the following 



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Qn 5.

Subshell electronic configuration of two elements are given .To which block ,period and group does each belong

  1.  1s2 2s2 2p3s2                    
  2.   1s2s2p3s3p3d4s2


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Qn 6.

The outermost electronic configuration of an element is 3s2 3p4

  1. Write the complete electronic configuration
  2. What is the valency of this element?
  3. Is it a metal or a non -metal? Justify your answer
  • Answer)
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Qn 7.

Analyse the table and answer the questions

Elements (symbols are not real)

Atomic number

P

11

Q

18

R

17

S

26

  1. Write the subsell electronic configuration of S. To which block does it belong?
  2. Which is an inert gas ?
  3. Which of the above is a s block element?
  • Answer)
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Qn 8.

How many electrons can be accommodated in f subshell?

(a) 10                                                   (c) 6

(b) 7                                                     (d) 14



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Qn 9.

Which are the subshells present in L shell

a. s,p,d

b. s,p,d,f

c. s

d. s,p



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Qn 10.

Arrange the subshell in the correct oder of electron filling?

4s 3d 2p 3s 2s 1s 3p 4p



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Qn 11.

Part of the Periodic table is given (symbols are not real )

  1. Which are the s block elements?
  2. Which may form coloured compounds ??
  3. Which is the least reactive metal in group 1 ??
  4. Find the element with only 1 electron in 4s subshell ?


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Qn 12.

The d subshell of an element with 4 shells is completely filled and there are two electrons in the 4th shell

  1. How many electrons can be accommodated in d sub shell ?
  2. Write the subshell electronic configuration of the element.

 

  • Answer)

    a. 10

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Qn 13.

The oxidation state shown by an element of the second period is -2

  1. How many electrons are there in the outer most shell of this element?
  2. Write down the subshell electronic configuration of the element.
  • Answer)
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Qn 14.

There are 7 electrons in the third shell of an element

  1. Write its subshell electronic configuration,
  2. Find the group and block of this element
  • Answer)
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Qn 15.

The electronic configuration of Chromium (24 Cr ) written as [Ar] 3d4s2

Is it correct? Give reason



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Qn 16.

Match the following.

A

B

C

s- block

Electron filling occurs in

the penultimate shell

Inner transition metals‍

p-block

Lanthanoids

Low ionisation energy

d- block

High Electro negativity

Elements in three states

f- block

Reactive metals

transition metals‍

  • Answer)
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    Qn 17.

    The element A belongs to second period and 17th group and the element B belong to third period and second group of the periodic table.(Symbols shown are not real)

    1. Write the subshell electronic configuration of A
    2. To which block does B belong? What is its valency?
    3. Give the formula of the compound by A and B


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    Qn 18.

    Which of the following is not a characteristics of p block elements?

    1. High electro-negativity
    2. Belongs to 13 to 18 group.
    3. High ionisation energy
    4. High metallic nature


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    Qn 19.

    Which of the following electronic configuration is that of an inert gas?

    1. 1s2 2s2 2p4
    2. 1s2 2s2 2p6
    3. 1s2 2s2 2p6 3s2
    4. 1s2 2s2 2p6 3s2 3p2


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    Qn 20.

    Analyse the subshell electronic configuration and answer the questions

    ( Symbols are not real)

    A - [Ne] 3s3p2

    B - [Ne] 3s2

    C -[Ar] 4s1

    D -[Ar] 4s3d2

    1. Which of the above has highest ectronegativity?
    2. Which element shows different oxidation state?
    3. How many p electrons are there in the atom C?
    4. Which has the lowest ionisation energy?
    • Answer)
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    Qn 21.

    Complete the table

    Electronic configuration

    State

    Period

    Group

    [Ne] 3s2

    solid

    3

    (a)

    [Ar] 3d4s2

    (b)

    (c)

    5

    [Ar] 4s1

    solid

    (d)

    (e)

    [Ne] 3s3p6

    (f)

    3

    18

     



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    Qn 22.

    The atomic number of A,B,C and D are 12,17,19 and 25 respetively (Symbols are not real)

    1. Write the subshell electronic configuration of B
    2. Find the group and block of D
    3. Which among the above shows -1 oxidation state?
    4. Write the subshell electronic configuration of D


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    Qn 23.

    Subshell electronic configuration of some elements are given

    ( symbols are not real)

    A - [Ne] 3s1

    B - [Ar] 4s2

    C - [Ar] 3d4s2

    D - [Ne] 3s3p4

    1. What is the atomic number of B?
    2. Which among the above has the highest electro-negativity ?
    3. Name the element,the oxide of which shows acidic nature?
    4. Which of the above elements form coloured compound?
    • Answer)
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    Qn 24.

    Atomic number of the element of X is 25.The oxides are X2O3 and X2O5

    a . Write down the subshell electronic configuration of X?

    b. What is the oxidation state of X in X2O3 ?

    ( oxidation number of oxygen is -2)

    c . To which period and block does this element belong?

    • Answer)
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    Qn 25.

    Subshell electronic configuration of some elements are given(Symbols are not real)

    A - 1s2 2s2 2p4

    B - 1s2 2s2 2p6 3s1

    C - 1s2 2s2 2p6 3s2 3p4s1

    D - 1s2 2s2 2p6 3s2 3p3d6 4s2

    1. Find the atomic number of B
    2. Which subshell in D has the highest energy?
    3. To which period does C belong?
    4. Write the formula of the compound formed by A and B


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    Qn 26.
    • The element Z has 2 Shells
    • It always shows -1 oxidation state
    1. Write the subshell electronic configuration of the element
    2. Find the block and group of this element
    3. Write the formula of the compound formed when it reacts with Aluminium (Valency of Al = 3)


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    Qn 27.

    Complete the table related with the oxides of manganese( Atomic No;Mn=25)

    Compound

    Oxidation state of Mn

    Subshell electronic configuration of manganese ion

    MnO2

    +4

    (a)

    Mn2O3

    (b)

    1s2 2s2 2p6 3s2 3p3d4

    (c)

    +7

    1s2 2s2 2p6 3s2 3p6

    • Answer)
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    Qn 28.

    Analysis the given electronic configurations and answer the questions

    (Symbols given are not real )

    A -1s2 2s2 2p63s23p5

    B -1s2 2s2 2p6 3s2 3p1

    C -1s2 2s2 2p6 3s1

    D -1s2 2s2 2p6 3s2 3p6

    1. Which among the above is the biggest atom?
    2. Which element normally shows +1 oxidation state?
    3. Write the formula of the compound formed by A and B
    4. Which one of the above is s block element?


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    Qn 29.

    Find the relation and fill up

    [Ne] 3s2 3p: Group 16        [Ar] 3d3 4s: Group ___



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    Qn 30.

    Some Characteristic of Manganese are given

    • There are 4 shells.
    • Last 5 electrons enter d subshell

    a . Write the subshell electronic configuration of manganese

    (Oxidation number: O = -2)

    b .Write the subshell electronic configuration of manganese ion in MnO2.

    c .Write any two characteristics of the block to which this element belongs.

    • Answer)
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    Qn 31.

    The element Y shows oxidation numbers  +2,  +3

    a . Name the block to which Y may belong ?

    b: Write the formula of any chloride of Y

    ( Hint:Valency of Chiorine- 1)



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    Qn 32.

    The Atomic number of Iron is 26 and shows +3 oxidation state when it combines with oxygen(valency of oxygen=2)

    1. Write the formula of the compound
    2. Write the subshell electronic configuaration of Fe3 +
    • Answer)
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    Qn 33.

    Analyse the given subshell electronic configuaration and answer the question

    A - 1s2 2s2p6

    B - 1s2 2s2 2p6 3s23p4

    C - 1s22s2 2p6 3s2 3p3d6 4s2

    D - 1s2 2s2 2p6 3s2

    1. Which is the element that shows -2 oxidation number?
    2. Which is the element that does not take part in chemical reaction ?
    3. Which element shows different oxidation states?
    • Answer)
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    Qn 34.

    Third shell of an element X contains 6 electrons.

    1. Write down the subshell electronic configuration of the element
    2. Find the block and the group of the element.
    3. Write the subshell electronic configuration of the element of the same group with two subshells in its outer most shell.


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    Qn 35.

    Of the given two subshell elecrtonic configuration of an element A

    ( symbol is not real)

    i) 1s2 2s2 2p6 3s2 3p6 3d1

    ii)1s2 2s2 2p6 3s2 3p6 4s1

    1. Find the correct electronic configuration of the element “A”
    2. To which block of the periodic table does this element belong ?
    3. Write the formula of the oxide of this element

    (Valency : Oxygen= 2 )

    • Answer)
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    Qn 36.

    Complete the table (Symbols are not real )

    Ele-ment

    Sub shell electronic configuration

    Period

    number

    Group

    number

    A

    1s2s2

    2

    2

    B

    1s2 2s2 2p1

    2

    (a)

    C

    (b)

    3

    17

    D

    1s2 2s2 2p6 3s2 3p6 3d2 4s2

    (c)

    4

     

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    Qn 37.

    Some subshells are given.Find out the subshells which are not possible

    (3s, 1p, 3f, 3d)



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    Qn 38.

    Which of the following elements have half filled p sub shell?

    1. 7N
    2. 13Al
    3. 5B
    4. 15P
    • Answer)
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    Qn 39.

    Some electronic configurations are given below.

    1. 1s2 2s2 2p6 3s2 3p6
    2. 1s22s22p4
    3. 1s22s22p63s23p5
    4. 1s22s22p63s23p63d10 4s1

     

    1. Which among the above is the smallest atom?
    2. Which of the above is the configuration of Ca2+ ion , (Atomic number of Ca=20)
    3. Why calcium looses 2 electrons in chemical reaction. Explain on the basis of above configuration?
    4. which among the above shows -1 oxidation state?
    • Answer)
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    Qn 40.

    Match suitably

    A

    B

    1s2s2p3s3p5

    Shows different oxidation states

    1s2s2p6

    More reactive Metal

    1s2s1

    High ionisation energy

    1s2s2p3s3p3d5 4s2

    Non-metals