7) or A) QR
Al and S => QR = AlS
This is not correct because the Oxidation state of Al is +3 and for S should be -3 too, but S doesn't have a number 3 as oxidation state.
8) or B) QR2=> KO2
It's incorrect, It should be K2O
9) or C) QR => LiCl
This is correct, here the charges are +1 for Li and -1 for Cl
LiCl => Li+1 + Cl-1
10) or D)Q2R3 => Sr2Br3
This isn't correct, Oxidation state for Sr is +2, not +3
Answer: 9) or C) LiCl
