Find the valency of 4/2he and 14/7n
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19
Answer:
he=o as its a noble gas and has completed its duplet
and n= -3
as its electronic configuration is
n=2,5
so to complete its octate it needs 3 more electron. so it will take 3 electrons and get the negative-3 charge.
Answered by
1
The valency of ⁴₂He and ¹⁴₇N are 0 and -3 respectively.
- The valency is defined as the combining capacity of an atom to complete its octet and attain the noble gas configuration.
- The He atom is a noble gas. Its electronic configuration is 2.
- He has completed its duplet.
- It does not require any electron to attain a stable configuration as it already has a stable electronic configuration, so the valency of He is 0.
- The electronic configuration of N is 2,5.
- It requires 3 more electrons to attain a noble gas stable electronic configuration.
- It will gain 3 electrons so the charge will be -3, so the valency of N is -3.
Hence, the valency of ⁴₂He and ¹⁴₇N are 0 and -3 respectively.
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