What is the oxidation number of the metal in #GaCl_2#?

2 Answers
May 28, 2017

Answer:

+2

Explanation:

Net Oxidation State of a molecule should be zero.

So,

#(Ga) + 2(Cl) = 0#

In Chloride Ion Form, Cl has a charge of -1.

So Oxidation State of Chloride is -1.

Let The Oxidation State of Gallium be x.

So,

#[(x * 1) + {2 * (-1)}] = 0#
#rArr x - 2 = 0#
#rArr x = 2#

Hence explained the answer.

May 28, 2017

Answer:

This is clearly #stackrel(II+)"Ga"..........#

Explanation:

Oxidation state/number is the charge left on the central atom, when all the other bound atoms are removed, with the charge devolving to the most electronegative atom........

Do this for #GaCl_2#, and we get #Ga^(2+) +2xxCl^-#. This is not a typical oxidation state for a Group 13 atom; it may be a mixed valence species of #GaCl#, and #GaCl_3#.