Question

What does valencies mean​

Answer 1

The combining capacity of an atom is known as its valency. The number of bonds that an atom can form as part of a compound is expressed by the valency of the element

Answer 2

Answer:

Explanation:

the combining power of an element, especially as measured by the number of hydrogen atoms it can displace or combine with.

For e.g ...

Hydrogen peroxide H2O2 H = 1 O = 2

Acetylene C2H2 C = 4 H = 1

Mercury(I) chloride Hg2Cl2 Hg = 2 Cl = 1