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

Difference Between Mass Number and Atomic Number

	Mass Number
1.	Atomic mass is proportional to the number of neutrons and protons contained in an element’s nucleus.
2.	It is an element’s average weight.
3.	Atomic mass is denoted by A
3.	Atomic mass cannot be used to determine the element’s kind.

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

The positively charged protons tend to repel each other, and the neutrons help to hold the nucleus together. The number of protons is the atomic number, and the number of protons plus neutrons is the atomic mass.

What is the relationship connection between the number of protons and neutrons and the mass number or weight of the atom?

The total weight of an atom is called the atomic weight. It is approximately equal to the number of protons and neutrons, with a little extra added by the electrons. The stability of the nucleus, and hence the atom’s radioactivity, is heavily dependent upon the number of neutrons it contains.

What is difference between atomic weight and atomic mass?

Atomic mass (ma) is the mass of an atom. A single atom has a set number of protons and neutrons, so the mass is unequivocal (won’t change) and is the sum of the number of protons and neutrons in the atom. Atomic weight is a weighted average of the mass of all the atoms of an element, based on the abundance of isotopes.

What is the relation between atomic number and mass number Class 9?

Atomic Number: Atomic number is the number of protons present in an atom. Mass Number: Mass number is the sum of the number of protons and the neutrons of an atom.

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

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

Is atomic mass and atomic weight are same?

Is mass number and atomic mass same?

Key Takeaways: Atomic Mass Versus Mass Number The mass number is the sum of the number of protons and neutrons in an atom. It is a whole number. The atomic mass is the average number of protons and neutrons for all natural isotopes of an element.

Is atomic mass and atomic number the same?

Atomic mass is associated with the number of neutrons and protons that are present in a particular nucleus of an element. Atomic number is usually the number of protons present in an element’s nucleus.