Question

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

Answer 1

Answer:

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.

I think it's help u...

Answer 2

Be valency - 2

Fluorine valency - 7

Eg: BeC12

Eg: HF or CoF2, NF2

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