Question

a.
What is the valency in i. NO ii. N20 iii. NO2
b. Calculate relative molecular mass of
i. ZnCO3 [Zn=65, C=12, 0=16]​

Answer 1

$\LARGE{ \underline{\underline{ \pink{ \bf{Required \: answer:}}}}}$

Valency:

i) NO = +3

ii} N2O = +4

Molecular mass of ZnCO3:

65 + 12 + 16 x 3

77 + 48

125

Answer 2

Answer:

125

Explanation:

ykstististjstisnstkdfwwjktjtjtkwwktjsksttktsiskstksysputtwkwktjttkstskskt