Question

which of the following form trivalent ion
a) Ca
b) Al
c) o
d) s
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Answer 1

Answer:Option b.Al

Explanation:

Generally, up to a total of three electrons can be transferred in this way forming Monovalent, Divalent and Trivalent ions. Positively charged ions are known as Cations and negatively charged ions are known as Anions. Therefore, Al3+ is a trivalent cation and S2- is a divalent ion.