CLASSIFY THE FOLLOWING AS ATOMS , MOLECULES AND IONS :-
H ,Cl , O , He
H2 , Br2 , O2-
, Cl
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Answer:
Ions, atom, atom, atom, molecule, molecule, molecule, atom
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Answer:
H hydrogen
cl chlorine
O oxygen
He helium
H2 dihydrogen gas
Br2 bromide gas
O2 gas
cl chlorine gas
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