Chemistry, asked by RSXII, 7 months ago

Can someone explain the red marked point?​

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Answers

Answered by arifpathan2425
1

Answer:

When the electrons of s subshell do not take part in bond formation they are known as inert pair of electrons.

Answered by avinashkumarsinghdav
1

Answer:

those element which forms five covalent bond is caleed pentavalent element and on other those element which forms three covalent is called trivalent element.

Explanation:

1)in case of nitrogen have 7 valence electron in 2p shell so it make trivalrnt compound

2)in case of phosphorus which have 15 electron in 3p shell is it outermost shell

but nitrogen has also electron p subshell then why it has not pentavalent the reason is that nitrogen cannot expand its covalency upto 5 due to quantum theory(for further clarification go through ncert class 11 chemistry second unit ,topic- princle quantum no and azimuthal quantum no.

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