The first ionization potentials (eV) of Be and B respectively are (a)

1.	The first ionization potentials (eV) of Be and B respectively are (a) 8.29,8.29 (b) 9.32,9.32 (c) 8.29,9.32 (d) 9.32,8.29
Answer» The correct option is: (d) 9.32,8.29 Explanation: ₄Be → 1s² 2s², ⁵B → 1s² 2s² 2p¹ Due to stable fully-filled 's'-orbital arrangement of electrons in 'Be' atom, more energy is required to remove an electron from the valence shell than 'B' atom. Therefore 'Be' has higher ionization potential than 'B'.

The first ionization potentials (eV) of Be and B respectively are (a) 8.29,8.29 (b) 9.32,9.32 (c) 8.29,9.32 (d) 9.32,8.29

Answer»

The correct option is: (d) 9.32,8.29

Explanation:

₄Be → 1s² 2s², ⁵B → 1s² 2s² 2p¹

Due to stable fully-filled 's'-orbital arrangement of electrons in 'Be' atom, more energy is required to remove an electron from the valence shell than 'B' atom. Therefore 'Be' has higher ionization potential than 'B'.

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The first ionization potentials (eV) of Be and B respectively are (a) 8.29,8.29 (b) 9.32,9.32 (c) 8.29,9.32 (d) 9.32,8.29

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