Question

Valency of 21-30 elements

Answer 1

Explanation:

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Answer 2

21) Scandium - +3

22) Titanium - +2, +3, +4

23) Vanadium - +2, +3, +4, +5

24) Chromium. - +2, +3, +6

25) Manganese. - +2, (+3), +4, (+6), +7

26) Iron - +2, +3, (+4), (+6)

27) Cobalt - +2, +3, (+4)

28) Nickel - (+1), +2, (+3), (+4)

29) Copper. - +1, +2, (+3)

30) Zinc. - +2

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