Which one of the following cation is not present in group II?

Thus, chromium ion is not included in 2nd group, it is included in third analytical group of cation as Cr+3. Was this answer helpful?

What are the cation classifications?

Cations Classification

Group	Group reagent	Cations
Acid-basic
I	There are not	K+, Na+, Li+, NH4+
ІІ	HCl	Ag+, Pb+2, Hg2+2 Chlorides, insoluble in water and acids
ІІІ	H2SO4	Ca+2, Sr+2, Ba+2 Sulphates, insoluble in water, acids and bases

What is the group identification test for Group 3 which cation is detected?

Chemical Reactions Involved Group III Analysis The cations in this group are precipitated as hydroxides by adding ammonium hydroxide in presence of ammonium chloride. Thus, group reagent for this group is NH4OH in the presence of NH4Cl.

What are the 5 groups of cations?

The cations are classified into the following 5 groups.

Group I Cations (Ag+, Hg22+ and Pb2+ – insoluble chlorides):
Group II Cations (Hg2+, Pb2+, Cu2+, Bi3+, Cd2+, As3+, Sb3+ and Sn4+ – insoluble sulphides in acidic medium):
Group III Cations (Al3+.
Group IV Cations (Ca2+, Sr2+ and Ba2+ – carbonate precipitates):

Which cation is confirmed through Lake test?

As soon as the solution becomes alkaline, blue floating precipitate is obtained. Then the blue litmus solution is adsorbed on this aluminium hydroxide. This is the Principle for this test, Aluminium hydroxide is a good adsorbent, and therefore it adsorbs the blue litmus solution and gives this blue lake test.

How do you identify cations and anions?

Key Points

The electronic configuration of many ions is that of the closest noble gas to them in the periodic table.
An anion is an ion that has gained one or more electrons, acquiring a negative charge.
A cation is an ion that has lost one or more electrons, gaining a positive charge.

What are cations and anions give example?

Cation repels other cation whereas anion repels another anion. The number of protons is more than the number of electrons in a cation whereas the number of electrons is more than the number of protons in an anion….Difference Between Anions and Cations.

Basis	Anions	Cations
Examples	Sulfide, Oxide, Fluoride, Chloride	Iron, Lead, Sodium