write formula for 10 compounds by transposing the valencies
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Answer: Formula for the compounds by transposing the valencies are:
(1). Na2O
Na has the valency of +1 and O2 has the valency of -2. So by interchanging the valency of both the elements, it becomes
Na+O2-->Na2O.
(2). MgO
Mg has the valency of +2 and O2 has the valency of -2. So by interchanging the valency of both the elements, it becomes
Mg+O2-->MgO
(3). Na2O+H2
Na has the valency of +1 and in H2O, H has valency of +1 and OH has the valency of -1. So by interchanging the valency of both the elements, it becomes
Na+H2O-->Na2O+H2.
(4). NaCl+H2
Na has the valency of +1 and in HCl, H has valency of +1 and Cl has the valency of -1. So by interchanging the valency of both the elements, it becomes
Na+HCl-->NaCl+H2
(6). MgCl2+H2
Mg has the valency of +2 and in HCl, H has valency of +1 and Cl has the valency of -1. So by interchanging the valency of both the elements, it becomes
Mg+HCl-->MgCl2+H2
(7). Al2O3
Al has the valency of +3 and O2 has valency of -2. So by interchanging the valency of both the elements, it becomes
Al+O2-->Al2O3
(8). Al(OH) 3+H2
Al has the valency of +3 and in H2O H has valency of +1 and OH has the valency of -1. So by interchanging the valency of both the elements, it becomes
Al+H2O+-->Al(OH3+H2
(9). CaO
Ca has the valency of +2 and O has the valency of -2. So by interchanging the valency of both the elements, it becomes
Ca+O2-->CaO
(10). CaOH+H2
Ca has the valency of +2 and in H2O H has valency of +1 and OH has the valency of -1. So by interchanging the valency of both the elements, it becomes
Ca+H2O-->CaOH+H2