- Exam
- JEE Main
- Year
- 2023
- Date
- 8 April
- Shift
- Evening Shift
- Subject
- Chemistry
- Chapter
- s Block Elements
JEE Main 2023 · 8 April · Evening Shift · Chemistry · s Block Elements
Given below are two statements: One is labelled as Assertion A and...
Given below are two statements: One is labelled as
Assertion and the other is labelled as Reason
Assertion : Sodium is about times as abundant as potassium in the oceans.
Reason : Potassium is bigger in size than sodium.
In the light of the above statements, choose the correct answer from the options given below
Options
- ABoth and are true and is the correct explanation of
- B is true but is false
- CBoth and are true but is NOT the correct explanation of
- DBoth and are false
Correct answer
C. Both and are true but is NOT the correct explanation of
Step-by-step solution
Sodium is indeed about times more abundant than potassium in seawater. This is because sodium is more soluble in water than potassium, and is therefore more readily dissolved from rocks and minerals into seawater.
Potassium is bigger than sodium in size as atomic number of potassium is more than sodium and Potassium has one additional electron shell compared to sodium, which means that its atomic radius is larger.
So Both and are true but is NOT the correct explanation of