Question

Ul the name of an element.QYmba
. A molecule of an element or a compound is represented by its
. The valencies of the two elements of a binary compound are ...
Atoms are neither lost nor ...... in a chemical reaction​

Answer 1

Answer- chemical reaction.

Explanation:

Answer 2

ANSWER:

               a). A molecule of an element and compound is represented by its chemical symbols, and the ratio of the different elements is represents by the subscripts.

               b). A molecule of an element or a compound is represented by its formula. 3. The valencies of the two elements of a binary compound are transposed to obtain its formula.

               c). The number of atoms on the side of reactants is always equal to the number of atoms on the side of the products in a chemical reaction, i.e., no atom is lost during a chemical reaction.

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