# What is equal to the mass of a proton?

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The neutron has about the same mass as the proton, each has a mass a tiny amount greater than 1 AMU (atomic mass unit). The neutron is the smallest bit more massive.

The electron has a mass of just a bit over 5/10,000ths of an AMU. Extremely less massive in comparison, isn't it!
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# What is The mass of 12 protons is approximately equal to?

The mass of 12 protons is approximately equal to 12 atomic massunits.

# The mass of 12 protons is approximately equal to?

The mass of 12 protons is approximately equal to 12 atomic massunits.

Neutron

# Are the mass of protons and electrons equal?

No. Far off. A proton is 1,836 times heavier than an electron

# What is the mass of a proton equal to?

The mass of a proton is equal to a neutron.

one neutron

# Is the mass of an electron about equal to the mass of a proton?

No, it isn't. The mass of an electron is significantly smaller thanthat of a proton. The mass of 1,800 electrons is about the same as the mass of onesingle proton. The antipa

# Protons and neutrons both have masses equal to what?

About one (1) AMU or Atomic Mass Unit.

# What subatomic particle is equal in mass to a proton?

Neutrons are very close to the proton, but not exactly the same mass

# Does the mass of a neutron equal the mass of a proton?

The mass of a neutron is very close to that of a proton, but slightly higher.

# What mass is equal to the mass of a proton?

mass of protons and neutrons are similar (~ 1 amu)

# Is the mass of an electrons is about equal to the mass of a proton?

No, the mass of the proton is roughly about 1836 times more than an electron. Actually, electrons do a negligible contribution to the mass of an atom.

# Is the mass of a proton equal to the mass of a proton?

The mass of anything is always equal to its own mass

# Do protons and neutrons have equally mass?

No, although their masses are very close. The difference is noticed when one considers the internal structure of the particles: a proton is comprised of two up quarks and one

# What do you add to protons to equal mass number?

The mass number = protons + neutrons

# What have almost equal masses to the proton?

Neutrons and protons have similar mass (~1 amu)
In Science

# What equals atomic mass minus protons?

Number of neutrons.