Question

____is a composite radical.


1)Fe^3+
2)Ca^2+
3)NH^4+
4)S^2-




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Answer 1

Answer:

NH4+ is a composite radical

Explanation:

The ammonium ion is the only positive composite ion.

A positive ion is one which, contains more than one type of elements in it. Here ammonium ion contains nitrogen and hydrogen. So it is composite.

Answer 2

NH^4+ is the answer of this question.