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(i) In an H2S molecule, three atoms are present; two of hydrogen and one of sulphur.
(ii) In a PO43-ion, five atoms are present; one of phosphorus and four of oxygen.
(i) In an H2S molecule, three atoms are present; two of hydrogen and one of sulphur.
(ii) In a PO43-ion, five atoms are present; one of phosphorus and four of oxygen.
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