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Be(Z = 4) which has electronic configuration 1s 2 2s 2 shows electronic configuration of 1s 2 2s 1 2px 1 in excited state and one s-orbital (2s) and one p-orbital (2p) can intermix to form two sp hybrid orbitals which can be used to form BeCl 2 .

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The s-Block Elements

Short Answer Type

61. Beryllium oxide has a high melting point. Explain.

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62.

Which one is more basic Sr(OH)₂or Ba(OH)₂?

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63. Why does beryllium form BeCl₂although it has no unpaired electrons?

Be(Z = 4) which has electronic configuration 1s² 2s² shows electronic configuration of 1s² 2s¹ 2px¹ in excited state and one s-orbital (2s) and one p-orbital (2p) can intermix to form two sp hybrid orbitals which can be used to form BeCl₂.

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