Which among the following elements has the hi | vedclass

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

Question

(B) The number of atoms is calculated by the formula: $	ext{Number of atoms} = \frac{	ext{Given mass}}{	ext{Molar mass}} 	imes N_A$. Since the mas

Vedclass · Accepted Answer

$Na_{(s)}$

Vedclass · Answer

(B) The number of atoms is calculated by the formula: $	ext{Number of atoms} = \frac{	ext{Given mass}}{	ext{Molar mass}} 	imes N_A$. Since the mass is $1 \ g$ for all,the number of atoms is inversely proportional to the molar mass. $I$. $1 \ g \ Fe = \frac{1}{56} 	imes N_A \approx 0.0178 	imes N_A$ atoms. $II$. $1 \ g \ Au = \frac{1}{197} 	imes N_A \approx 0.0051 	imes N_A$ atoms. $III$. $1 \ g \ Na = \frac{1}{23} 	imes N_A \approx 0.0435 	imes N_A$ atoms. $IV$. $1 \ g \ Cu = \frac{1}{63.5} 	imes N_A \approx 0.0157 	imes N_A$ atoms. Comparing the values,$Na$ has the smallest molar mass,therefore it has the highest number of atoms.

Which among the following elements has the highest number of atoms in $1 \ g$ each? (Atomic masses: $Au=197, Na=23, Cu=63.5, Fe=56$)

Similar Questions

Calculate the number of $Ca^{2+}$ ions in $222 \ g$ of anhydrous calcium chloride $(CaCl_2)$? (Atomic mass: $Ca = 40 \ u$,$Cl = 35.5 \ u$)

Number of atoms present in $224 \, dm^3$ of oxygen gas at $STP$ is

What is the number of moles of oxygen atoms and the number of moles of $N$ atoms respectively present in one mole of thymine?

What is the number of moles present in $1 \ m^3$ of any gas at $STP$?

The number of molecules in $8.96 \ L$ of a gas at $0^{\circ}C$ and $1 \ atm$ pressure is approximately

Vedclass Test Series

Exam Paper Generator

Online Exam Module