Question

which of the following atoms has the highest first ionisation enthalpy ?
1) sc
2) Rb
3) Na
4) K​

Answer 1

Answer:

option 3.........................

Answer 2

Explanation:

1)

Sc

.

Explanation:

The first ionization energy refers to the energy it takes to remove one electron from an atom.

It mainly depends on the electrostatic attraction between the positive protons in the nucleus and negative electrons—if protons and electrons are more attracted to each other, then the first ionization energy would be higher, and vice versa.