Question

the atomic number of an element is 11. Predict the following
• number of valence electrons and it's valency
• it's group number and period number
• nature of its oxide and formula of its chloride.​

Answer 1

Answer:

sodium has 11 at. no.

valency =1 and valence electron 1

group no 1 and period no 3

NaCl NaO

Answer 2

Answer:

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