Question

how many Valence electrons are there in atom of nitrogen oxygen and krypton . Also find the valency of each​

Answer 1

Answer:

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Explanation:

Answer 2

Explanation:

NITROGEN

electronic configuration of nitrogen is

${1s}^{2} {2s}^{2} {2p}^{3}$

Here we have 5 valence electrons

outermost she'll have 3 electrons

according to octet rule the valency is 8-3 = 5

OXYGEN

Electronic configuration of oxygen

${1s}^{2} {2s}^{2} {2p}^{4}$

Then we have 6 valence electrons

According to octet rule the valency is 4

KRYPTON

electronic configuration of Krypton

[AR] 3d^10 4s^2 4p^6

Valence electrons is 8

According to octet rule Valency is 2

CONCLUSIONS

VALENCE ELECTRONS OF NITROGEN - 5

VALENCY -5

VALENCE ELECTRONS OF OXYGEN - 6

VALENCY - 4

VALENCE ELECTRONS OF KRYPTON - 8

VALENCY - 2

THIS IS ANSWERS FOR ALL