Question

why ionization energy of Ra is greater than that of Ba

Answer 1

Answer:

a radium (Ra) nucleus has 32 more protons than a Barium nucleus (57% more), so it's attractive force of any of its electron is correspondingly greater. this increases the amount of energy needed for ionization.

Answer 2

Answer:

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Explanation:

Why does radium have a higher first ionization energy than barium? A radium nucleus has 32 more protons than a barium nucleus (57% more), so its attractive force on any of its electrons is correspondingly greater. This increases the amount of energy needed for ionization.