Question

Arrange in ascending order - mg²+, Na+,Al³+​

Answer 1

Answer:

Al + 3 , Mg +2 , Na +

depends on first  ionization energy

first ionization energy means the minimum energy that should be supplied to an atom in gaseous state to form a unipositive gaseous ion

first inonization energy increases rightward along a period

Al , Mg and Na belongs to 3rd period

but these atoms get ionized