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# What is the relationship between neutrons and protons and the atomic mass?

## What is the relationship between neutrons and protons and the atomic mass?

Atomic mass is proportional to the number of neutrons and protons contained in an element’s nucleus. The number of protons in an element’s nucleus is generally represented by its atomic number.

## What is the relationship between atomic number and mass number?

The mass number of an atom is equal to the number of protons plus the number of neutrons that it contains. In other words, the number of neutrons in any atom is its mass number minus its atomic number. Although all atoms of a given element must have the same atomic number, they need not all have the same mass number.

What is the relationship between the number of protons and neutrons and the atomic number?

The number of protons determines an element’s atomic number and is used to distinguish one element from another. The number of neutrons is variable, resulting in isotopes, which are different forms of the same atom that vary only in the number of neutrons they possess.

### What is the relationship between the number of protons and electrons in an atom and why do they have that relationship?

Electrons contribute greatly to the atom’s charge, as each electron has a negative charge equal to the positive charge of a proton. Scientists define these charges as “+1” and “−1.” In an uncharged, neutral atom, the number of electrons orbiting the nucleus is equal to the number of protons inside the nucleus.

### What is the difference between atomic mass and mass number?

The major difference between atomic number and mass number is that the atomic number states the number of protons present in an atom whereas, the mass number indicates the total of the number of protons and the number neutrons present in an atom.

What does the atomic mass equal?

The atomic mass of an atom is an empirically measured property, which is equivalent to the sum mass of protons, neutrons, and electrons that make up the atom (with a small adjustment for nuclear binding energy).

## What is the relationship between group number and number of valence electrons?

The group number of the representative elements = the number of valence electrons.

## What is the relationship of the mass of the nucleus to the mass of an atom?

As was written, almost all of the mass of an atom is located in the nucleus, with a very small contribution from the electron cloud. The mass of the nucleus is associated with the atomic mass number, which is the total number of protons and neutrons in the nucleus of an atom.

Is atomic number equal to number of electrons?

The atomic number uniquely identifies a chemical element. It is identical to the charge number of the nucleus. In an uncharged atom, the atomic number is also equal to the number of electrons.

### What is the difference between atomic mass and mass number quizlet?

The atomic mass measures the total mass of an atom. The mass number is the total number of protons and neutrons in an isotope.

### Are atomic mass and atomic weight the same?

So again, the mnemonic for memorizing the difference between atomic mass and atomic weight is: atomic mass is the mass of an atom, whereas atomic weight is the weighted average of the naturally occurring isotopes.

What is the relationship between neutron, mass number and atomic number?

Neutron is one of the sub-atomic particles like the electron or proton. Mass number is the combined mass of all the electrons, protons and neutrons present in an atom.

## How is the mass of an atom determined?

Because electrons have a tiny mass in comparison to protons and neutrons, the mass of an atom is determined solely by protons and neutrons. The mass number of an element is the total number of protons and neutrons contained in one atom. The mass number is equal to the sum of the number of protons and neutrons or,

## What is the relationship between atomic number and proton?

The atomic number is giving the number of Proton . In steady state number of proton equal to number of electron.

Why are atomic numbers always a whole number?

Atomic numbers are in the whole number whereas atomic mass is not. Why? As Ritesh correctly indicates, atomic number is based on number of protons. While atomic mass is based on protons plus neutrons. Why is atomic number always a whole number??