1.

How many atoms are present in a(i) H2S molecule and(ü) PO4^(3-) ion?

Answer»

Answer: (i)3 atomsbecause H2S molecule hastwo atomsof hydrogen and one atom of sulphur. (ii)5 atomsbecause PO43- ion has one atom of phosphorus andfour atomsof oxygen

1) the hydrogen = 2 atom the oxygen =4 atom=6atoms2) the phosphorus = 1 atomthe oxygen =4 atom= 5 atom



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