Question

19) Study the variation in the atomic radii of second group elements are
given below and answer the questions given.
LI
Atomic radii (pm) →
Atomic number (z) →
(a) In the second group which element has the highest metallic
characteristics?
(b) In this second group of elements which element has the smallest
atomic size?​

Answer 1

Answer:

1) atomic radius increases down the group due to addition of extra cell as we go down the group

2) atomic radius decreases from left to right along a period due to increase in nuclear charge

Explanation:

1)metallic character increases as we go down a group as effective nuclear charge decrease metals are electropositive as they tend to lose electrons will forming bond

2) Indus Indus second group beryllium has smallest atomic size only three cell are present 2,2

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