Which of the sequences given below shows the correct increasing order of energy?

Which is the correct increasing order of ionisation energy ?

Which is the correct increasing order of ionisation energy ?

Which of the following sequence represents the correct increasing order of bond angle in the given molecules ?

Which of the following sequence represents the correct increasing order of bond angle in the given molecular ?

Which of the following represents the correct increasing order of the densities of given substances?

Arrange the substances given below in the order of increasing hardness.

Four diatomic species are listed below in different sequences. Which of these represents the correct order of their increasing bond order?