Question

A trivalent negative radical is-

(a) Hydroxide

(b) Phosphate

(c) Carbonate

(d) Iodide​

Answer 1

Answer:

The valency of an element [or radical] is always a whole number. Elements [or radicals] with valency one are monovalent, those with valency two are divalent, and those with valency three are trivalent. All nonmetals and nonmetallic radicals have negative valencies as shown in the table below.

Answer 2

Answer:

(d) Iodine

Explanation:

A trivalent negative radical is-

(a) Hydroxide

(b) Phosphate

(c) Carbonate

(d) Iodide