Question

Electronic configurations of few elements are given below. Mark the incorrect match.

A. $$1{s^2}2{s^2}2{p^5} $$   - Most electronegative element
B. $$1{s^2}2{s^2}2{p^3} $$   - An element belonging to match. 3rd period and 5th group  
C. $$1{s^2}2{s^2}2{p^6}3{s^2}3{p^6}3{d^8}4{s^2} $$     - A $$d$$ - block element
D. $$1{s^2}2{s^2}2{p^6}3{s^2}3{p^6} $$    - An element from 18th group
Answer :   $$1{s^2}2{s^2}2{p^3} $$   - An element belonging to match. 3rd period and 5th group
Solution :
Since $$n = 2$$  it belongs to 2nd period.

Releted MCQ Question on
Inorganic Chemistry >> Classification of Elements and Periodicity in Properties

Releted Question 1

The correct order of second ionisation potential of carbon, nitrogen, oxygen and fluorine is

A. $$C > N > O > F$$
B. $$O > N > F > C$$
C. $$O > F > N > C$$
D. $$F > O > N > C$$
Releted Question 2

The element with the highest first ionization potential is

A. boron
B. carbon
C. nitrogen
D. oxygen
Releted Question 3

The first ionisation potential in electron volts of nitrogen and oxygen atoms are respectively given by

A. $$14.6,13.6\,$$
B. $$13.6,14.6$$
C. $$13.6,13.6$$
D. $$14.6,14.6$$
Releted Question 4

Atomic radii of fluorine and neon in $$\mathop {\text{A}}\limits^ \circ $$ngstorm units are respectively given by

A. $$0.72,1.60$$
B. $$1.60,1.60\,$$
C. $$0.72,0.72\,\,$$
D. None of these values

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Classification of Elements and Periodicity in Properties


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