AryVizcaino
Answered

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How many inner shell electrons does beryllium have?

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josie7555
Beryllium has two inner shell electrons
josueslash
and two 2s electrons in the Be atom. Its electron configuration is thus 1s22s2or[He]2s2 The symbol [He] denotes the inner shell of two 1s electrons which have the same configuration as the noble gas He. The beryllium atom is noticeably smaller than the lithium atom
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