Elements P,Q,R,S have atomic numbers 12,13,17&18respectively . Which of these is a non metal and why.
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Element No:-12)Mg ( Magnesium
No:-13)Al ( Almomiium
No :-17Cl ( Chlorine..
No:-18Ar (Argon
No 17 element Chlorine is non metal because
it doesn't have lusture,ductile and sonorousetc
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