Question

5. From the elements -
He, Br, Pt & O; the element which forms a polyatomic molecule is
& which is liquid at room temperature is
6. The valency of iron in FeO is
[2+/1+] of chlorine (chloride) in CaCl, is___[1-/2-]
and of dichromate in K2Cr2O, is[ 2+/2+].
pls pls pls tell me

Answer 1

Answer:

5. From the elements – He, Br, Pt and O; the element which forms a polyatomic molecule is O and which is liquid at room temperature is Br.

6. The valency of iron in FeO is 2+ of chlorine [chloride] in CaCl2 is 1–

Explanation:

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