Question

what is the answer of this question ?
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Answer 1

Answer:

Explanation:Atom of an element is electrically neutral as it has electrons (negatively charged) ,protons(positively charged) of same no. As atomic number =electrons =protons

Atom even has a neutrons with no cbarge

Thus positive and negative of same number mark an atomelectrically neutral

+1 Sodium (Na) potassium (K)

+2 Beryllium (Be)Magnesium (Mg)

+3Aluminium (Al)Boron (B)

Metals generally have a positive valence

Valency is the gain or loss of electrons by an atom in order to attain stable electronic configuration to its nearest noble gas

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