Which of the following statements is $NOT$ correct?

  • A
    All alkali metals are silvery white.
  • B
    Density of potassium is less than sodium.
  • C
    Compounds of group-$1$ elements are diamagnetic.
  • D
    Melting point of group-$1$ elements increases down the group.

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Similar Questions

Match List-$I$ with List-$II$.
List-$I$ List-$II$
$(a)$ $Li$ $(i)$ Absorbent for carbon dioxide
$(b)$ $Na$ $(ii)$ Electrochemical cells
$(c)$ $KOH$ $(iii)$ Coolant in fast breeder reactors
$(d)$ $Cs$ $(iv)$ Photoelectric cell

Choose the correct answer from the options given below:

(Milky Cloud) $C \xleftarrow{CO_2} A + Na_2CO_3 \rightarrow B + C$
The chemical formulae of $A$ and $B$ are

$KO_2$ is used in space and submarines because it

The correct order of hydration enthalpies of alkali metal ions is

Nitrates of all the metals are

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