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Question
Give the symbol of the following element:
Hydroxide
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Solution
| Name | Symbol |
| Hydroxide | OH |
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An element which can exhibit valencies of 2, 4 and 6 can be :
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| (d) Magnesium | (4) Hg |
| (e) Zinc | (5) Cu |
| (f) Aluminum | (6) Au |
| (g) Iron | (7) K |
| (h) Lead | (8) Fe |
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| (j) Mercury | (10) Na |
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| (l) Platinum | (12) Pt |
| (m) Gold | (13) Ag |
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