Question

Amongst be ,b,mg,and al the second ionization potential is maximum for

Answer 1

Ionization energy is just how much it costs to pull an ... which of the elements has the highest second ionization energy

Answer 2

Magnesium (Mg) will have maximum second ionization potential.

Explanation:

• Ionization energy is defined as the energy required to remove the most loosely bound electron from a neutral gaseous atom. Atomic number of magnesium is 12 and its electronic configuration is $1s^{2}2s^{2}2p^{6}3s^{2}$.

• In order to attain stability, magnesium loses two electrons and thus acquires a noble gas electronic configuration. Hence, it will be difficult to remove further electrons from $Mg^{2+}$ as it is already stabilized.

• Beryllium has electronic configuration as $1s^{2}2s^{2}$ so, when it loses two electrons then its electronic configuration will be $1s^{2}$. Further, loss of an electron is not possible. therefore, it will not have maximum second ionization potential.

• Atomic number of boron is 5 and its electronic configuration is $1s^{2}2s^{2}2p^{1}$ and it will readily lose more than one electron. Hence, it will not have maximum second ionization potential.

• Atomic number of aluminium is 13 and its electronic configuration is $1s^{2}2s^{2}2p^{6}3s^{2}3p^{1}$ and it will readily lose more than one electron. Hence, it will not have maximum second ionization potential.

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