JEEVisionary rocket logo JEEVisionaryIIT Mission Control
Join
Chemistry · Solid State

Solid State Unit Cell Simulator

Explore SC, BCC, FCC unit cells. See atoms, coordination number, packing.

Try the simulator Back to Chemistry Lab

🧊 Solid State Unit Cell Simulator

Solid State
What's happening? Simple cubic: 52% packing, 1 atom/unit cell. BCC: 68%, 2 atoms. FCC: 74%, 4 atoms. Coordination number: SC=6, BCC=8, FCC=12.
Why this matters for JEE

Crystal Lattices is a most-searched and high-weightage topic in JEE Chemistry.

This concept appears in 1-2 questions every year. Understanding it visually builds the intuition needed to solve numerical problems fast.

Key formula

Crystal Lattices Formula

Core Formula

Packing = 52%, 68%, 74%

Adjust the controls above and watch how changing each variable affects the result in real time.

JEE Application

This is one of the most-tested concepts in JEE. Master the formula and the visual intuition together.

Step-by-step

How to approach Crystal Lattices problems

  1. Identify the variables — list what's given and what's asked.
  2. Apply the core formula — Packing = 52%, 68%, 74%.
  3. Check units — convert to SI units before calculating.
  4. Verify with intuition — does the answer make chemical sense?
FAQs

Crystal Lattices Questions

How does this concept appear in JEE?

Expect 1-2 questions per paper. Focus on understanding the relationship between variables visually.

What's the most common mistake?

Using wrong units or forgetting to convert. Always check your units first.

WA FB