Assertion. In a unit cell of NaCl , all Cl^- ions touch Na^+ ion as all well they touch each other . Reason. Radius ratio r_+//r_- in NaCl is 0.414.

Assertion. In a unit cell of NaCl , all Cl^- ions touch Na^+ ion as al

1.	Assertion. In a unit cell of NaCl , all Cl^- ions touch Na^+ ion as all well they touch each other . Reason. Radius ratio r_+//r_- in NaCl is 0.414.
Answer» If both assertion and REASON are true, and reason is the true explanation of the assertion. If both assertion and reason are true, but reason is not the true explanation of the assertion. If assertion is true , but reason is false If both assertion and reason are false. SOLUTION :Correct A . In a unit cell of NaCl, all `Cl^-` ions touch `Na^+` ION but do not touch each other. Correct R . Actual RADIUS ratio `r_(Na^+)//r_(Cl^-)` is 0.525 and not 0.414