Assertion(A): Sodium belongs to IIA group.
Reason(R): The electronic configuration of Sodium is 1s² 2s² 2p⁶ 3s¹
a) Both A and R are true and R is the correct explanation of A
b) Both A and R are true and R is not the correct explanation of A
c) A is correct and R is incorrect
d) A is incorrect and R is correct
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Audio-visual media are an important source for writing the history of modern India. This statement is true because audio-visual media has the unique ability to create visual stimulation for the one who is learning or analyzing the history
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