(a) What is the number of valence electrons in the atoms of first element in a period ? (b) What is the usual number of
(a) What is the number of valence electrons in the atoms of first element in a period ?
(b) What is the usual number of valence electrons in the atoms of the last element in a period ?
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The number of valence electrons in the atoms of first element in a period is-
(a) 1
The usual number of valence electrons in the atoms of the last element in a period is-
(b) 8
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