i. when the number of atoms of different elements on both sides of aa chemical equation is equal, it is called a balanced equation.ii. According to the law of conservation of mass, the total mass of productsmust be equal to the total mass of reactants. that’s why the chemical equation shouldbe balanced. example: BaCl2 +…
Magnesium is a very reactive metal when it keeps in the air it reacts with oxygenand forms a layer of magnesium oxide on magnesium ribbon. this layer hinders theburning of magnesium. hence, it is to be cleaned before burning.
S.No. Elements Symbol Atomic No. Valency 1 Hydrogen H 1 +1 2 Helium He 2 0 3 Lithium Li 3 +1 4 Beryllium Be 4 +2 5 Boron B 5 +3 6 Carbon C 6 +4 7 Nitrogen N 7 -3 8 Oxygen O 8 -2 9 Fluorine F 9 -1 10 Neon Ne 10…
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