Question

Which of the following Period 4 elements would be most li

form a cation?
A. K (IE, = 419 kJ/mol)
B. Ge (IE, = 762 kJ/mol)
C. Br (IE, = 1140 kJ/mol)
D. Kr (IE, = 1351 kJ/mol​

Answer 1

K

Explanation:

The key aspect in this question is to look for Ionization Energy (EI), which describe the needed energy to take out an electron. Thefore, the potasiumm need lower energy . Another important thing is analyze how K will take nobel gas electron configuration when loss 1 electron, this It will be more stable