Predict the number of valence electrons in an atom of beryllium.

Predict the number of valence electrons in an atom of beryllium. Enter your answer in the provided box.

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Expert Solution

Valence electron means electrons of an atom located in outermost orbital (valence shell).

Electronic configuration of beryllium :- 4 electrons

Be-: 1s² 2s²

Here the outermost orbital(valence shell) is 2s and number of electrons in 2s orbital is two.There are two valence electrons in beryllium atom

Answer=2

queen_honey_blossom answered 1 year ago

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