Incorrect set of quantum numbers from the following is :
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Ionisation enthalpy increases along each series of the transition elements from left to right. However, small variations occur.
Reason (R) : There is corresponding increase in nuclear charge which accompanies the filling of electrons in the inner d-orbitals.
In the light of the above statements, choose the most appropriate answer from the options given below :
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Lithium and beryllium unlike their other respective group members form compounds with pronounced ionic character.
Reason (R) : Lithium and Magnesium have similar properties due to diagonal relationship.
In the light of the above statements, choose the correct answer from the options given below:
For a weak acid HA, the percentage of dissociation is nearly 1% at equilibrium. If the concentration of acid is 0.1 mol L$$^{-1}$$, then the correct option for its K$$_a$$ at the same temperature is :