Classification Of Elements And Periodicity In Properties Question 201
Question: The tenth elements in the periodic table resembles with the [CPMT 1988]
Options:
A) First period
B) Second period
C) Fourth group
D) Ninth group
Show Answer
Answer:
Correct Answer: B
Solution:
Each period consists of a series of elements whose atom have the same principal quantum no. $ (n) $ of the outer most shell i.e. In second period $ n=2 $ , this shell has four orbitals (one 2s and three $ 2p $ ) which can have eight electrons, hence second period contains 8 elements from atomic no. 3 to 10.
BETA
