Question

GIVE REASON :
non-metals forms negative ions.
metals form positive ions.
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Answer 1

Answer:Non metals usually gain electrons and thus they have more electron in the shells than protons in nucleus and hence they form negative ions while metals usually lose electron and thus they have more protons in nucleus than electrons in shells and hence they form positive ions.

Answer 2

Explanation:

non meals form negative ions because they have less electrons in their outermost shell because of which they gain some electrons from other elements and form negative ions

whereas metals have extra electrons which they remove by donating them to others. Hence they form +ve ions

eg : Na = 2,8,1 ( metal)

Cl = 2,8,7 ( non metal)

Na+ Cl- = NaCl