Kerala Syllabus SAMAGRA SCERT SAMAGRA Question Pool for Class 10 English Medium Chemistry Periodic Table & Electronic Configuration
What is the oxidation state of Mn in MnCl2
(Oxidation state of Cl= -1)
(c) +2
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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?
a.
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Analyse the table above and answer the questions
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Match the following
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Subshell electronic configuration of two elements are given .To which block ,period and group does each belong
a)
block- s
period- 3
group- 2
b)
block - d
period- 4
group -
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The outermost electronic configuration of an element is 3s2 3p4
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Analyse the table and answer the questions
Elements (symbols are not real) |
Atomic number |
P |
11 |
Q |
18 |
R |
17 |
S |
26 |
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How many electrons can be accommodated in f subshell?
(a) 10 (c) 6
(b) 7 (d) 14
(d) 14
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Which are the subshells present in L shell
a. s,p,d
b. s,p,d,f
c. s
d. s,p
d) s,p
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Arrange the subshell in the correct oder of electron filling?
4s 3d 2p 3s 2s 1s 3p 4p
1s 2s 2p 3s 3p 4s 3d
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Part of the Periodic table is given (symbols are not real )
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The d subshell of an element with 4 shells is completely filled and there are two electrons in the 4th shell
a. 10
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The oxidation state shown by an element of the second period is -2
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There are 7 electrons in the third shell of an element
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The electronic configuration of Chromium (24 Cr ) written as [Ar] 3d4 4s2
Is it correct? Give reason
Not correct. Half filled subshell give more stability. So the electronic configuration willbe
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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 |
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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)
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Which of the following is not a characteristics of p block elements?
d. High metallic nature
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Which of the following electronic configuration is that of an inert gas?
b.
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Analyse the subshell electronic configuration and answer the questions
( Symbols are not real)
A - [Ne] 3s2 3p2
B - [Ne] 3s2
C -[Ar] 4s1
D -[Ar] 4s2 3d2
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Complete the table
Electronic configuration |
State |
Period |
Group |
[Ne] 3s2 |
solid |
3 |
(a) |
[Ar] 3d3 4s2 |
(b) |
(c) |
5 |
[Ar] 4s1 |
solid |
(d) |
(e) |
[Ne] 3s2 3p6 |
(f) |
3 |
18 |
a. 2
b.solid
c. 4
d. 4
e. 1
f.
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The atomic number of A,B,C and D are 12,17,19 and 25 respetively (Symbols are not real)
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Subshell electronic configuration of some elements are given
( symbols are not real)
A - [Ne] 3s1
B - [Ar] 4s2
C - [Ar] 3d6 4s2
D - [Ne] 3s2 3p4
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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?
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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 3p6 4s1
D - 1s2 2s2 2p6 3s2 3p6 3d6 4s2
a. 11
b. 3d
c. 4
d.
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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 3p6 3d4 |
(c) |
+7 |
1s2 2s2 2p6 3s2 3p6 |
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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
i) C
ii) C
iii) BA3
iv)
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Find the relation and fill up
[Ne] 3s2 3p4 : Group 16 [Ar] 3d3 4s2 : Group ___
Group - 5
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Some Characteristic of Manganese are given
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.
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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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The Atomic number of Iron is 26 and shows +3 oxidation state when it combines with oxygen(valency of oxygen=2)
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Analyse the given subshell electronic configuaration and answer the question
A - 1s2 2s2 2p6
B - 1s2 2s2 2p6 3s23p4
C - 1s22s2 2p6 3s2 3p6 3d6 4s2
D - 1s2 2s2 2p6 3s2
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Third shell of an element X contains 6 electrons.
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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
(Valency : Oxygen= 2 )
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Complete the table (Symbols are not real )
Ele-ment |
Sub shell electronic configuration |
Period number |
Group number |
A |
1s2 2s2 |
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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Some subshells are given.Find out the subshells which are not possible
(3s, 1p, 3f, 3d)
1p , 3f
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Which of the following elements have half filled p sub shell?
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Some electronic configurations are given below.
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Match suitably
A |
B |
1s2 2s2 2p6 3s2 3p5 |
Shows different oxidation states |
1s2 2s2 2p6 |
More reactive Metal |
1s2 2s1 |
High ionisation energy |
1s2 2s2 2p6 3s2 3p6 3d5 4s2 |
Non-metals |
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The last electron of an atom enters the 3d sub shell.There are 3 electrons in it.
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Correct the wrong statements if any.
a) As distance from nucleus increaes energy of shells increases.
d) Number of subshells in a shell will always be equal to the shell
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A part of the periodic table is given below(Symbols are not real)
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The subshell electronic configuration of an element is 1s2 2s2 2p6 3s2 3p5.
As it has 7 electrons in its outermost shell/ 5 electrons in outer
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