JEE Main 2023 · ChemistryNumerical answerNumerical valueEasyCalculation

JEE Main 13 April 2023, Shift 2, Chemistry Q82

Question 82 of 90 in this shift, Chemistry question 22 of 30, Section B.

Sodium metal crystallizes in a body centred cubic lattice with unit cell edge length of 4 Å. The radius of sodium atom is ______

\times10^{-1}

Å (Nearest integer)

Official answer

NTA final key.

Chapter: The Solid State
Topic: Crystal Lattices
Idea tested: Edge-Radius Relationships

Same topic in other shifts

All Crystal Lattices questions

6 Apr 2023, Shift 1 · Q61A compound is formed by two elements X and Y. The element Y forms cubic close packed arrangement and those of element X occupy one third…MediumSingle correct
11 Apr 2023, Shift 1 · Q82An atomic substance A of molar mass $12\ \mathrm{g\ mol^{-1}}$ has a cubic crystal structure with edge length of 300 pm. The no. of atoms…MediumNumerical value
28 Jul 2022, Shift 1 · Q82An element M crystallises in a body centred cubic unit cell with a cell edge of 300 pm. The density of the element is…MediumNumerical value
24 Jun 2022, Shift 1 · Q81Atoms of element X form hcp lattice and those of element Y occupy $\frac{2}{3}$ of its tetrahedral voids. The percentage of element X in…MediumNumerical value
16 Mar 2021, Shift 2 · Q52Ga (atomic mass 70 u) crystallizes in a hexagonal close packed structure. The total number of voids in 0.581 g of Ga is ________…MediumNumerical value
18 Mar 2021, Shift 1 · Q31In a binary compound, atoms of element A form a hcp structure and those of element M occupy 2/3 of the tetrahedral voids of the hcp…EasySingle correct

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.