If z =5 what would be the valency of the element? also name the element
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Explanation:
Atomic number, z=5.
The name of element is Boron.
Boron, z= 5 = 2,3
It's valency is 3 , because in the outermost shell of boron no.of. electrons is 3.
if no.of. electrons in outermost shell of any element is less than 5 ,then valency is also the same number.
if it is greater than or equal to 5, then valency is 8 - n,
where n is no.of. electrons greater than or equal to 5.
eg: 8-5 = 3 is valency
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