Question

Х С
Write
the
no. of valancy electrons prensent
in
08

which elements are metals in the
above table a
Amony Sulphue & oxygen
& oxygen atoms, which
atom have the bigger atomic size?
?
Among Calcium & Magnesium, which element is
electropositive?
​

Answer 1

Answer:

The electronic configuration of nitrogen N(7)=2,5

Phosphorous P(15)=2,8,5

N is more electronegative than P.

From top to bottom down a group, electronegativity decreases. This is because number of shell increases down a group, and thus there is an increased distance between the valence electrons and nucleus, or a greater atomic radius.

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