Atom Calculator
Calculate atomic properties based on proton, neutron, and electron counts
Input Atomic Components
Element: Carbon
Number of protons determines the element
Mass Number: 12
Protons + Neutrons = Mass Number
Charge: 0 (Neutral)
Electrons ≠ Protons creates ions
Common Elements
Atomic Properties
Element:
Carbon
Symbol:
C
Atomic Number (Z):
6
Mass Number (A):
12
Neutron Number (N):
6
Charge:
0 (Neutral)
Isotope Notation
12C
C (Neutral Atom)
Atomic Structure
6 Protons
6 Neutrons
6 Electrons
Atomic Number (Z)
The number of protons in an atom’s nucleus. This determines the chemical element and its position in the periodic table.
Z = Number of Protons
Mass Number (A)
The total number of protons and neutrons in an atom’s nucleus. Atoms of the same element with different mass numbers are called isotopes.
A = Protons + Neutrons
Charge
The net electric charge of an atom. Neutral atoms have equal protons and electrons. Ions have different numbers of protons and electrons.
Charge = Protons – Electrons
Common Examples
Carbon-12
6 protons, 6 neutrons, 6 electrons
Result: Neutral Carbon atom (12C)
Carbon-14
6 protons, 8 neutrons, 6 electrons
Result: Neutral Carbon isotope (14C)
Sodium Ion (Na⁺)
11 protons, 12 neutrons, 10 electrons
Result: +1 charge (23Na⁺)
Chloride Ion (Cl⁻)
17 protons, 18 neutrons, 18 electrons
Result: -1 charge (35Cl⁻)