Build a Nucleus Simulation

🧩 Particle Tray

p⁺

Proton

Positive particle. Number of protons decides the element.

Neutron

Neutral particle. Neutrons change the isotope and stability.

Quick Actions

Learning Rule

Atomic number = protons
Mass number = protons + neutrons
Isotope = same element with different neutrons

Periodic Table

Protons 0

Neutrons 0

Atomic No. 0

Mass No. 0

Empty Nucleus

📊 Nucleus Result

Current Nucleus

Empty

Add particles to begin

ElementNone

Symbol—

Atomic number0

Mass number0

Isotope—

Suggested decay—

✅ Test Yourself

Build Carbon-14

A nucleus has 6 protons and 8 neutrons. Find the element, mass number, isotope, and stability.

Element name

Mass number

Isotope name

Stability

Periodic Table

Protons 0

Neutrons 0

Atomic No. 0

Mass No. 0

Empty Nucleus

📊 Live Analysis

Current Nucleus

Empty

Add particles to begin

ElementNone

Symbol—

Atomic number0

Mass number0

Isotope—

🧠 Problem Solver

Find the isotope

A nucleus contains 8 protons and 8 neutrons. Find its atomic number, mass number, isotope name, and stability.

Try Own Problem

Problem category

Choose a category and enter the known values. The simulation will update automatically.

Periodic Table

Protons 0

Neutrons 0

Atomic No. 0

Mass No. 0

Empty Nucleus

📊 Live Analysis

Current Nucleus

Empty

Add particles to begin

ElementNone

Symbol—

Atomic number0

Mass number0

Isotope—