Question

The first ionisation potential of be and b respectively are

Answer 1

Answer:

9.32, 8.29

Explanation:

First ionisation potential of Be is greater than boron due to following configuration ₄Be=1s²,2s² ₅B=1s²,2s²2p¹ Order of attraction of electrons towards nucleus 2s>2p, so more amount of energy is required to remove the electron with 2s-orbital in comparison to 2p orbital

Answer 2

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 'BRead more on Sarthaks.com - https://www.sarthaks.com/226251/the-first-ionization-potentials-ev-of-be-and-b-respectively

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