The reaction rate constant may be defined as the rate of the reaction when the concentration of each reactants is. •Zero
•Unity
•Doubled the initial concentration
•Infinite​

B) Unity.

Explanation:

Specific rate constant at a given temperature may be defined as the rate of reaction when the molar concentration of each reactant is unity.

✔ Unity.

EXPLANATION:

As we already know that the specific rate constant at a given temperature is defined as the rate of reaction when the molar concentration of each reactant is __unity__.

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.