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1.The symbol of sodium is NA because it is derived from the Latin word natrium,potassium from the word kalium and iron from ferrum.
2.Symbol of silver is Ag and gold is Au.
3.O stands for oxygen and O2 for two molecules of oxygen.
4.H2O means it is the combination of 2 hydrogen moleculese and one oxygen molecule.
5.valency 3
6.magnesium 2
1.The symbol of sodium is NA because it is derived from the Latin word natrium,potassium from the word kalium and iron from ferrum.
2.Symbol of silver is Ag and gold is Au.
3.O stands for oxygen and O2 for two molecules of oxygen.
4.H2O means it is the combination of 2 hydrogen moleculese and one oxygen molecule.
5.valency 3
6.magnesium 2
aabid5:
sorry I could not explain briefly.Now my knowledge is limited till here itself...
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