The atomic radius of Li, Na and K are 1: 33A, 1. 54A and 1. 96A res pectively. Which of the following explaqins this gradation in atomic radius?
a
electropositivity decreases from Li to Na to K
b
electronegativity decreases from Li to Na to K
c
the number of the electron shells increases from Li to Na to K
d
the elements are in the same period
Explanation
Correct Option
cNo explanation available
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