Question

Correct the following formulae?
(i) KCr2O7
(ii) NaCl2
(iii) Zn20
(iv) NH3CI
(v) Na2OH​

Answer 1

Answer:

I don't know what is happening in the world

Answer 2

Answer:

iii)NH3Cl ( it is Ionic salt I suppose)

But, they suppose all wrong

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