Why can't we write C2H2 as CH ? If we can write Ca2O2 as CaO then why

1.	Why can't we write C2H2 as CH ? If we can write Ca2O2 as CaO then why not hydrogencarbons?Why can't we write C2H2 as CH ? If we can write Ca2O2 as CaO then why not hydrogencarbons? I had asked it earlier but not satisfied please answer
Answer» 1. The BOND in CaO is ionic bond. A cation of Ca2+ combines with anion of O2- and we get CaO because each + is cancelled by each - and we get a neutral molecule of CaO. There is no molecule as CA2O2, we have a lattice of ionic solids which have SMALLEST unit as CaO. 2. On the other hand, C2H2 is a molecule where all the C and H are bonded to each other by covalent bonds. It is an individual moiety and not a lattice. Also, 2 is the number of ATOMS of C and H, but in the above case, 2 is the charge.

Why can't we write C2H2 as CH ? If we can write Ca2O2 as CaO then why not hydrogencarbons?Why can't we write C2H2 as CH ? If we can write Ca2O2 as CaO then why not hydrogencarbons? I had asked it earlier but not satisfied please answer

Answer»

1. The BOND in CaO is ionic bond. A cation of Ca2+ combines with anion of O2- and we get CaO because each + is cancelled by each - and we get a neutral molecule of CaO. There is no molecule as CA2O2, we have a lattice of ionic solids which have SMALLEST unit as CaO.

2. On the other hand, C2H2 is a molecule where all the C and H are bonded to each other by covalent bonds. It is an individual moiety and not a lattice. Also, 2 is the number of ATOMS of C and H, but in the above case, 2 is the charge.

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