AP EAMCET2015Chemistrys Block Elements
Assertion (A) : Alkali metals are soft and have low melting and boiling points. Reason (R) : This is because interatomic bonds are weak.
Options
- ABoth (A) and (R) are not true
- B(A) is true but (R) is not the correct explanation of (A)
- C(A) is true but (R) is false
- DBoth (A) and (R) are true and (R) is the correct explanation of (A)
Correct answer
D. Both (A) and (R) are true and (R) is the correct explanation of (A)
Step-by-step solution
Melting and boiling points of alkali metals are very low due to weak metallic bond.