Question

define ionisation enthalpay? how it varies along the period​

Answer 1

Explanation:

As we move from left to right across a period, the ionization energy of elements increases. This is due to the decrease in the size of atoms across a period. The valence electrons get closer to the nucleus of an atom as we move from left to right due to increased nuclear charge.

Answer 2

Answer:

As we move from left to right across a period, the ionization energy of elements increases. This is due to the decrease in the size of atoms across a period. The valence electrons get closer to the nucleus of an atom as we move from left to right due to increased nuclear charge.