MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Periods

Why do third ...

Question

Why do third period elements expand their coalence above four?

Open in App

Solution

The octet rule can expanded by some elements by utilizing $d -$ orbitals found in the $3^{r d}$ principal energy level and beyond. So, atoms like sulphur, phosphorous, chlorine are common examples of elements that form an expanded octet.
For example- $S F_{6}, P C l_{5},$ etc.

Suggest Corrections

thumbs-up

0

Similar questions

Q. Carbon shown a maximum covalency of four whereas other members can expand their covalency due to ?

Q. Nitrogen is restricted to a maximum covalency of

4

since only four (one s and three p) orbitals are available for bonding. The heavier elements have vacant d orbitals in the outermost shell which can be used for bonding (covalency) and hence, expand their covalence as in

P F_{6}^{-}

Q. Given below are four elements with their atomic numbers

Element	Atomic number
A	16
B	11
C	3
D	14

Which of the above elements is a metalloid ?

Q. Why do transition elements show variable oxidation state?

Explain their catalytic properties in details.

Why are 13th group elements able to form covalent bond?

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon