is the number of valence electrons same for lithium beryllium ,boron ,carbon, oxygen, fluorine and neon same
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No it differs with atom to atom ....
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Answer:
Explanation:
Atomic number of Beryllium = 4
Electronic configuration = (2, 2)
Atomic number of Oxygen = 8
Electronic configuration = (2, 6)
Valency of Beryllium is 2,
Valency of Oxygen is = 8 ‒ 6 = 2
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