Alkali metal salt gives a pale violet colour in flame test is:
Important Questions on The s-Block Elements
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason . Assertion : is sparingly soluble in water. Reason : The ionic radius of ion is smallest among its group members, hence has least hydration enthalpy.
In the light of the above statements, choose the most appropriate answer from the options given below.
Match List-I with Match List-II
| List-I (Metal) |
List-II (Emitted light wavelength ) |
||
| (A) | (I) | ||
| (B) | (II) | ||
| (C) | (III) | ||
| (D) | (V) |
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 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 :
| List-I (Salt) | List-II (Flame colour wavelength) | ||
| (a) | (i) | ||
| (b) | (ii) | ||
| (c) | (iii) | ||
| (d) | (iv) | ||
Choose the correct answer from the options given below:
