Question

if you will answer I will be add brainy list....

1)Among the following, the element with smallest covalent radii is..a) Be..b) B..c) C..d)N..

2)The ions O-2, F-, Na+, Mg+2, A1+3 are iso electronic. Their ionic radii show....
a) An increase from 0-2 to F- and then decrease from Nat to Al+3...
b) A decrease from 0-2 to F- and then increase from Nat to Al+3...
c) A significant increase from O-2 to Al+3...
d) A significant decrease from O-2 to A1+3...
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Answer 1

Answer:

1. The element with smallest covalent radii is Be.

     2. As we move along a period, size decreases and as we move down the group size increases so here  As we move along a period, size decreases and as we move down the group size increases so here  As we move along a period, size decreases and as we move down the group size increases.

d) A significant decrease from O-2 to A1+3 WOULD BE THE RIGHT ANSWER.

HOPE IT WILL BE HELPFUL..