Atomic Mass Formula

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Atomic Mass is approximately equivalent to the number of protons and neutrons in the atom (the mass number). Check FAQs
M=mp+mn
M - Atomic Mass?mp - Total Mass of Proton?mn - Total Mass of Neutron?

Atomic Mass Example

With values
With units
Only example

Here is how the Atomic Mass equation looks like with Values.

Here is how the Atomic Mass equation looks like with Units.

Here is how the Atomic Mass equation looks like.

22Edit=6Edit+16Edit
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Atomic Mass Solution

Follow our step by step solution on how to calculate Atomic Mass?

FIRST Step Consider the formula
M=mp+mn
Next Step Substitute values of Variables
M=6Dalton+16Dalton
Next Step Convert Units
M=1E-26kg+2.7E-26kg
Next Step Prepare to Evaluate
M=1E-26+2.7E-26
Next Step Evaluate
M=3.65316600021524E-26kg
LAST Step Convert to Output's Unit
M=22Dalton

Atomic Mass Formula Elements

Variables
Atomic Mass
Atomic Mass is approximately equivalent to the number of protons and neutrons in the atom (the mass number).
Symbol: M
Measurement: WeightUnit: Dalton
Note: Value can be positive or negative.
Total Mass of Proton
Total Mass of Proton if in Daltons or amu is equal to the number of protons in an atom, else if in kg is 1.67 × 10^(−27) times the number of protons in an atom.
Symbol: mp
Measurement: WeightUnit: Dalton
Note: Value should be greater than 0.
Total Mass of Neutron
Total mass of neutron if in Daltons or amu is equal to the number of neutrons in an atom, else if in kg is 1.67 × 10^(−27) times the number of neutrons in an atom.
Symbol: mn
Measurement: WeightUnit: Dalton
Note: Value can be positive or negative.

Other formulas in Electrons and Orbits category

​Go Change in Wave Number of Moving Particle
Nwave=1.097107(nf)2-(ni)2(nf2)(ni2)
​Go Number of Electrons in nth Shell
NElectron=(2(nquantum2))
​Go Orbital Frequency of Electron
forbital=1T
​Go Velocity of Electron given Time Period of Electron
velectron=2πrorbitT

How to Evaluate Atomic Mass?

Atomic Mass evaluator uses Atomic Mass = Total Mass of Proton+Total Mass of Neutron to evaluate the Atomic Mass, Atomic mass is approximately equivalent to the number of protons and neutrons in the atom (the mass number) or to the average number allowing for the relative abundances of different isotopes. Atomic Mass is denoted by M symbol.

How to evaluate Atomic Mass using this online evaluator? To use this online evaluator for Atomic Mass, enter Total Mass of Proton (mp) & Total Mass of Neutron (mn) and hit the calculate button.

FAQs on Atomic Mass

What is the formula to find Atomic Mass?
The formula of Atomic Mass is expressed as Atomic Mass = Total Mass of Proton+Total Mass of Neutron. Here is an example- 1.3E+28 = 9.96318000058704E-27+2.65684800015654E-26.
How to calculate Atomic Mass?
With Total Mass of Proton (mp) & Total Mass of Neutron (mn) we can find Atomic Mass using the formula - Atomic Mass = Total Mass of Proton+Total Mass of Neutron.
Can the Atomic Mass be negative?
Yes, the Atomic Mass, measured in Weight can be negative.
Which unit is used to measure Atomic Mass?
Atomic Mass is usually measured using the Dalton[Dalton] for Weight. Kilogram[Dalton], Gram[Dalton], Milligram[Dalton] are the few other units in which Atomic Mass can be measured.
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