Question

The elements beryllium, calcium, and strontium are all in group 2. What is the correct relationship of these elements regarding their ionization energy?
A. Ca < Be < Sr
B. Sr < Be < Ca
C. Be < Ca < Sr
D. Sr < Ca < Be
E. Ca < Sr < Be

Answer 1

⭐⭐⭐hey mate!⭐⭐⭐

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⚡⚡ In a group while going from top to bottom ionisation energy decreases.

⚡⚡In case of half filled and full filled orbitals IP is maximum.

⚡⚡Ionisation energy is defined as the amount to energy required to remove electron from an atom.

So the correct answer will be option (d)

Sr<Ca<Br

Hope it will help you...

#phoenix

Answer 2

The correct relationship of these elements regarding their ionization energy is  Sr < Ca < Be

Explanation:

Ionization energy is the energy required to remove the most loosely bound electron from an isolated gaseous atom.

O moving down a group , the ionization energy decreases as we move down as the size increases. The electrons get added to the higher shells and the nuclear charge increases. But the effect of addition of new shells is more dominant and The valence shell moves father from the nucleus.

Thus the valence electron ca be easily removed and thus less energy is required to remove the valence electron.Thus ionization energy decreases.

As the elements in group 2 are arranged as Be, Mg , Ca , Sr and Ba.The ionization decreases in the same trend.

Learn more bout ionization energy

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