JEE Main 202131 AugustEvening Shift
- Exam
- JEE Main
- Year
- 2021
- Date
- 31 August
- Shift
- Evening Shift
- Subject
- Chemistry
- Chapter
- s Block Elements
JEE Main 2021 · 31 August · Evening Shift · Chemistry · s Block Elements
Given below are two statements : one is labelled as Assertion (A)...
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Lithium salts are hydrated.
Reason (R) : Lithium has higher polarising power than other alkali metal group members.
In the light of the above statements, choose the most appropriate answer from the options given below :
Options
- A(A) is not correct but (R) is correct.
- B(A) is correct but (R) is not correct.
- CBoth (A) and (R) are correct but (R) is NOT the correct explanation of (A).
- DBoth (A) and (R) are correct and (R) is the correct explanation of (A).
Correct answer
C. Both (A) and (R) are correct but (R) is NOT the correct explanation of (A).
Step-by-step solution
Li salts are hydrated , because lithium-ion has high hydration enthalpy.
Smaller the size of cation more is the polarising power.
Polarising power order: