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NEET 2024
Exam
NEET
Year
2024
Subject
Chemistry
Chapter
Some Basic Concepts of Chemistry

NEET 2024 · Chemistry · Some Basic Concepts of Chemistry

The highest number of helium atoms is in

The highest number of helium atoms is in

Options

  1. A4 u of helium
  2. B4 g of helium
  3. C2.271098 L of helium at STP
  4. D4 mol of helium

Correct answer

D. 4 mol of helium

Step-by-step solution

(1) 4u4 u of He=4u4u=1He\mathrm{He}=\frac{4 u}{4 u}=1 \mathrm{He} atom (2) 4 g of Helium =4 g4 g=\frac{4 \mathrm{~g}}{4 \mathrm{~g}} mole =1=1 mole =NAHe=\mathrm{N}_{\mathrm{A}} \mathrm{He} atom (3) 2.2710982 of He at STP =2.27122.710982 mole =0.1 mole=0.1 NAHe atom \begin{aligned} 2.2710982 \text{ of He at STP } & =\frac{2.271}{22.710982} \text{ mole } \\ & =0.1 \mathrm{~mole} \\ & =0.1 \mathrm{~N}_{\mathrm{A}} \mathrm{He} \text{ atom } \end{aligned} (4) 4 mol of He=4 NAHe\mathrm{He}=4 \mathrm{~N}_{\mathrm{A}} \mathrm{He} atoms
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