Which of the following atoms has the highest ionization energy?
Choose one answer.
a. P
b. Cl
c. Mg

Question

Which of the following atoms has the highest ionization energy?
Choose one answer.
	a. P 	
	b. Cl 	
	c. Mg

anonymous · Answer

cl because the electrons are strongly held and it is small in size

.sam. · Answer

You'll have to assume that its first ionisation energy.

.sam. · Answer

because in the 11th ionisation energy, Mg is the highest

anonymous · Answer

1s2 2s2 2p6, 3s2
or the noble gas abbreviation [Ne] 3s2
this is the electronic configuration of magnesium. It is very difficult to take the outermost electron at this stage. So Mg has the highest ionisation potential.