Question

Identify the least stable ion amongst the following

Solution

Correct option is

Be

Be– is attaining 2s22sp1 configuration by losing its fulfilled stability of 2s2configuration.

SIMILAR QUESTIONS

Q1

Which of the following anhydrous halides can be prepared by heating its hydrates form?

Q2

 

The solubility in water of sulphates down the Be group is:

Be > Mg > Ca > Sr > Ba. This is due to

Q3

Which of the following is the correct order of gradually decreasing basic nature of the oxides?

Q4

KO2 (potassium superoxide) is used in oxygen cylinders in space and submarnies because it 

Q5

A metal M readily forms water soluble sulphate MSO4, water insoluble hydroxide M(OH)2 and oxide MO which becomes inert on heating. The hydroxide is soluble in NaOH. The metal M is

Q6

On dissolving moderate amount of sodium metal in liquid NH3 at low temperature, which one of the following does not occur?

Q7

Which of the following chemicals is not present in clear hard water?

Q8

Which of the following has maximum lattice energy?

Q9

 

The solubility in water of sulphates down the Be group is:

Be > Mg > Ca > Sr > Ba. This is due to

Q10

Which of the following is the correct order of gradually decreasing basic nature of the oxides?