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.

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 2 years ago

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