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(D) The melting point of group $14$ elements decreases as we move down the group from $C$ to $Sn$,but $Pb$ has a slightly higher melting point than $S

Vedclass · Accepted Answer

$50$

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(D) The melting point of group $14$ elements decreases as we move down the group from $C$ to $Sn$,but $Pb$ has a slightly higher melting point than $Sn$ due to its metallic structure and bonding characteristics. The order of melting points is $C > Si > Ge > Pb > Sn$.Atomic numbers and their corresponding elements:$Z=6$ $(C)$: $3730 \ ^{\circ}C$$Z=14$ $(Si)$: $1410 \ ^{\circ}C$$Z=32$ $(Ge)$: $937 \ ^{\circ}C$$Z=50$ $(Sn)$: $232 \ ^{\circ}C$$Z=82$ $(Pb)$: $327 \ ^{\circ}C$Comparing the given options $(Z=14, 6, 82, 50)$,the element with the lowest melting point is $Sn$ $(Z=50)$.

Given below are the atomic numbers of some group $14$ elements. The atomic number of the element with the lowest melting point is:

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