Asecond order reaction is 50% complete in 15 min. how long after the start of the 10 reaction will it be 85% complete?

85 minutes

Explanation:

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

Half life for second order kinetics is given by:

= half life = 15 min

k = rate constant =?

= initial concentration = 100 (say)

Integrated rate law for second order kinetics is given by:

a= concentration left after time t =

Thus after 85 minutes after the start of the reaction, it will be 85% complete.

the electronic configuration of an atom with eight electrons is 1s²2s²2p⁴. the orbital diagrams are shown in the figure.

as per the hunds rule:

1. electrons tend to avoid being in the same orbital as per as practicable.

2. electrons in different orbitals of the same energy will have their spin parallel.

this can be illustrated from the multiplicity of the orbitals of the atom. as there are four electrons in the p orbital and p orbital has 3 sub-shells. the electrons can be fed in different ways as shown in the figure but the correct orbital diagram will be as per the hunds rule.