Topic Menu

Cyber-chess a chess instruction site

Solutions: Atomic Structure

Q4.

An atom of argon is ionised by the removal of two orbiting electrons.

(a) How many protons and neutrons are there in this ion?

(2 marks)

(b) What is the charge, in C, of this ion?

(2 marks)

(c) Which constituent particle of this ion has:

(i) a zero charge per unit mass ratio,

 

(ii) the largest charge per unit mass ratio?

(2 marks)


(d) Calculate the percentage of the total mass of this ion that is accounted for by the mass of its electrons.

(3 marks)
(Total 9 marks)