Question

il) Beryllium (Be) has 2 valence electrons and Fluorine has 7 valence electrons, present in group 2
and group 17 respectively in 24 period of the modern periodic table. Determine the valency of
these two elements using the above relationship.​

Answer 1

Answer:

Beryllium valency -> 2

Fluorine valency -> 7

Eg: BeC12

Eg: HF or CoF2, NF2

Explanation:

period 2 element is one of the chemical elements in the second row (or period) of the periodic table of the chemical elements. The periodic table is laid out in rows to illustrate recurring (periodic) trends in the chemical behavior of the elements as their atomic number increases; a new row is started when chemical behavior begins to repeat, creating columns of elements with similar properties.

Hope it helps... Please mark as the Brainliest!!!

Answer 2

Explanation:

The valency of Beryllium is 2 because it needs 2 electron to become stable .

The valency of Fluorine is 1 as it needs 1 electron to become stable.

Here is your answer ...

Hope it will help you ...