Question

Why there is a break in the third period elements of the long from of the periodic table.​

Answer 1

Answer:

The third period contains eight elements: sodium, magnesium, aluminium, silicon, phosphorus, sulfur, chlorine, and argon. ... All of the period 3 elements occur in nature and have at least one stable isotope.

Answer 2

ANSWER -

The octet rule can expanded by some elements by utilizing d− orbitals found in the 3

rd

principal energy level and beyond. So, atoms like sulphur, phosphorous, chlorine are common examples of elements that form an expanded octet.

For example- SF

6

,PCl

5

, etc.

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