Question

4f and 6p which orbital has more energy and why?​

Answer 1

Answer:

The orbitals are filled according to (n+l) rule i.e. the orbitals having more (n+l) value will be filled before even if the value of n of that particular orbit is more. Here, (n+l) of 6s orbital is 6 and that of a 4f orbital is 7 and hence 4f orbital is filled before 6s orbital

Answer 2

4f and 6p. Which has higher energy?

• In this type of questions, simply apply (n+l) rule.

• The orbital with higher (n+l) value will have higher energy content.

• In case two orbitals having same (n+l) value, the orbital with higher n value will have higher energy.

For 4p:

$\boxed{n + l = 4 + 1 = 5}$

For 6p:

$\boxed{n + l = 6 + 1 = 7}$

Since 6p has higher (n+l) value than 4p, it has higher energy content.