Determine the chemical formula for the compound, chromate(iii). a) k3[cr(nh2ch2ch2nh2)3] b) [k(nh2ch2ch2nh2)3]cr3+ c) [kcr(nh2ch2ch2nh2)3]3+ d) k2[cr(nh2ch2ch2nh2)4] e) [cr(nh2ch2ch2nh2)2]k2

The correct answer is (A).

Explanation:

Potassium-trisethylene-diamine chromate(III)

Potassium is coming first in name which means that potassium is present as cation.

In the complex, 3 molecules of 'ethylene-diamine' is present as an dianion and forms a complex with Chromium (III) metal, making the overall charge on the coordination sphere as (-3).

So, to make a neutral complex, 3 potassium ions are required.

Hence, the structure of the complex is

a plasma is a warm ionized gasoline consisting of approximately equal numbers of definitely charged ions and negatively charged electrons. the characteristics of plasmas are notably unique from the ones of ordinary neutral gases in order that plasmas are considered a awesome "fourth kingdom of remember."