JEE Main 201912 JanuaryEvening Shift

Exam: JEE Main
Year: 2019
Date: 12 January
Shift: Evening Shift
Subject: Chemistry
Chapter: Classification of Elements and Periodicity in Properties

JEE Main 2019 · 12 January · Evening Shift · Chemistry · Classification of Elements and Periodicity in Properties

The element that does not show catenation is

Options

A $Sn$
B $Si$
C $Ge$
D $Pb$

Correct answer

D. $Pb$

Step-by-step solution

Catenation is the tendency to link with one another through covalent bonds to form chain and rings, i.e., catenation. This is because bonds are very strong in the carbon family. On moving down the group, the size increases and the tendency to show catenation decreases because bond enthalpy decreases. The order of catenation is

C > Si > Ge > Pb

Pb

does not show catenation.

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