Many elements have non-integral atomic masses | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) Elements have non-integral atomic masses because they exist as a mixture of isotopes with different masses,which occur in nature in specific propo

Vedclass · Accepted Answer

They have isotopes

Vedclass · Answer

(A) Elements have non-integral atomic masses because they exist as a mixture of isotopes with different masses,which occur in nature in specific proportions. For example,Chlorine $(Cl)$ has two isotopes with mass numbers $35$ and $37$,present in a ratio of $3:1$. Therefore,the average atomic mass is calculated as: $\frac{3 	imes 35 + 1 	imes 37}{4} = 35.5 \ u$. Thus,the presence of isotopes with different masses leads to non-integral atomic masses.

Isotope	$\%$ Natural abundance	Molar mass
$^1H$	$99.985$	$1$
$^2H$	$0.015$	$2$

Many elements have non-integral atomic masses because:

Similar Questions

The modern atomic weight scale is based on

In the standardization of $Na_2S_2O_3$ using $K_2Cr_2O_7$ by iodometry,the equivalent weight of $K_2Cr_2O_7$ is:

Calculate the average atomic mass of hydrogen using the following data:

Isotope $\%$ Natural abundance Molar mass

$^1H$ $99.985$ $1$

$^2H$ $0.015$ $2$

The equivalent weight of $K_2Cr_2O_7$ in acidic medium is:

When an element forms its oxide,oxygen constitutes $20\%$ of its weight in the oxide. What is the equivalent weight of the element?

Vedclass Test Series

Exam Paper Generator

Online Exam Module