Question

1. A...... is an abbreviation of the name of an element.
2. A molecule of an element or a compound is represented by its ...
3. The valencies of the two elements of a binary compound are.....।​

Answer 1

Answer:

1) Symbol.

2) formula

3) transposed to obtain its formula.

Explanation:

Answer 2

Answer:

1) Symbol

2) formula

3) transposed