Atomic Weight Caluculator

ATOMIC WEIGHT CALCULATOR

SELECT ELEMENT

Carbon

STANDARD ATOMIC WEIGHT

12.011

ISOTOPES & ABUNDANCE

CALCULATED AVERAGE 12.011

ABUNDANCE DISTRIBUTION

KEY FACTS

PROTONS

NEUTRONS (AVG)

6.01

MASS NUMBER RANGE

12 - 13

STABLE ISOTOPES

labs

Ask Elmo AI

What is Atomic Weight Calculator?

The Horizons Atomic Weight Pro is a precision tool designed to calculate the Molar Mass of any chemical compound. It simplifies complex stoichiometry by instantly summing up the weights of individual atoms in a formula.

1 Accurate Data: Uses high-precision atomic mass units (amu) for all periodic elements.
2 Formula Support: Easily handle complex molecular structures like glucose or acids.
3 Instant Solves: Perfect for students and lab researchers to get molar mass in g/mol instantly.

COMPOUND ANALYSIS

H₂O

Molar Mass

18.015 g/mol

ELEMENTAL DATA

What is an Atom?

An Atom is the smallest unit of ordinary matter that forms a chemical element. Everything you see—from your phone to the stars—is made of these tiny building blocks.

Nucleus: The dense center containing Protons and Neutrons.

Electrons: Negatively charged particles "clouding" the nucleus.

Empty Space: 99.9% of an atom is actually just empty space!

ATOMIC CORE

STABLE STATE: 100%

What is Atomic Weight?

Atomic Weight is the average mass of an atom. It's not just a simple count; it's a weighted average that accounts for all the natural isotopes of an element.

• Measured in Atomic Mass Units (u).
• Includes Protons + Neutrons mass.
• Horizons Engine calculates precision up to 4 decimal places.

MOLAR MASS UNIT

1.00794 u

MASS SYNCED

Horizons ATOMIC

What is a Proton?

A Proton is a subatomic particle found in the nucleus of every atom. It carries a positive electric charge (+1e) and acts as the "ID Card" of an element.

+ The number of protons defines the Atomic Number.
+ Located deep inside the Atomic Nucleus.
+ Roughly 1836 times heavier than an electron.

CHARGE STATE

POSITIVE (+)

NUCLEAR PARTICLE DETECTED

Horizons CORE

What is a Neutron?

A Neutron is a subatomic particle with no net electric charge (neutral). It lives inside the nucleus alongside protons, acting as the "glue" that holds the core together.

± Has a Neutral Charge (0).
± Slightly heavier than a proton.
± Determines the Isotope of an element.

STABILITY MODE

NEUTRAL (0)

ISOTOPIC MASS ADDED

Horizons NEUTRON

What is an Electron?

An Electron is a tiny subatomic particle with a negative electric charge (-1e). They orbit the nucleus at incredible speeds, forming an "electron cloud" that determines how atoms bond together.