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Why is the atomic mass the same as the total number of protons and neutrons in the nucleus?
Wiki User
∙ 12y ago
The neutrons and protons are in the nucleus which determines the element/isotope. The electrons however define the net charge (ie. positive if there are less electrons then protons and negative if more) and it can be changed more easily, than changing the amount of neutrons . Another reason is that electrons have a tiny mass compared to the protons and neutrons and it wouldn't change the mass number by all that much.
Wiki User
∙ 12y ago
Wiki User
∙ 12y agoThe relative Atomic Mass is the same as the total number of protons and neutrons as, protons and neutrons have a mass of one ( electrons can be ignored).
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What does the atomic number of an atom made of?
An atomic nucleus contain protons and neutrons; protons and neutrons contain quarks and gluons.
What is the difference of atomic number and atomic mass?
atomic number is the number of protons in the nucleus or electrons around the nucleus in an atom that is not ionized. atomic mass is the sum of the number of protons and the number of neutrons in the nucleus.
Is the number of protons equal to the atomic mass minus the atomic number?
No. For an isotope of an element, the number of neutrons, not protons, in the nucleus of an atom of the isotope is equal to the isotopic mass number minus the atomic number. The atomic number itself is the number of protons in the nucleus.
How is an atomic number similar to mass number?
The nucleus of an atom consists of protons and neutrons. The number of protons in a particular nucleus is its "atomic number". The total number of protons and neutrons in a particular nucleus is its "mass number".
What is the relationship between atomic number proton number electron number neutron number and atomic mass?
The atomic number correlates to the number of protons found in the nucleus of an atom. The atomic number also dictates the number of electrons that orbit the nucleus if the atom in neutral. Finally the atomic mass is the number of protons and neutrons found in the nucleus. The atomic number equals the number of protons (p+) or electron (e-).
How many protons are in a lithium nucleus?
The atomic number of lithium is 3. Therefor there are 3 protons and neutron in the nucleus of lithium. Lithium also has 4 neutrons. atomic # = protons and neutrons neutrons = rounded atomic mass - atomic number Sources- 7th grade Acc. Science
How do you calculate the number of neutrons an element has in its nucleus?
You need to find the atomic number, and the atomic mass. The atomic number i the number of PROTONS in the nucleus, the atomic mass, or mass number, is the number of PROTONS and NEUTRONS in the nucleus. To find the number of neutrons you subtract the atomic number from the mass number.
How is the nucleus related to the periodic table?
The nucleus contains the protons and neutrons. The number of protons determines the atomic number of the element and the number of protons and the number of neutrons together determine the atomic mass.
How do you find the neutrons that are in the nucleus?
Number of neutrons = Atomic mass of an isotope - Number of protons (Atomic number)
Is the atomic number of an atom is equal to the number of protons or neutrons in the nucleus?
Protons
What does the atomic number of an atom made of?
An atomic nucleus contain protons and neutrons; protons and neutrons contain quarks and gluons.
A(n) is described as a nucleus of protons and neutrons surrounded by an electron cloud.?
Atomic number is the equivalent of the number of protons in an atomic nucleus.
Is atomic mass the amount of neutrons in the nucleus in the atom?
atomic mass = number of neutrons + number of protons.
What is the difference of atomic number and atomic mass?
atomic number is the number of protons in the nucleus or electrons around the nucleus in an atom that is not ionized. atomic mass is the sum of the number of protons and the number of neutrons in the nucleus.
Is the atomic weight of an element is equal to the number of protons minus the number of neutrons?
Atomic weight of an element is the number of protons plus neutrons in the nucleus, atomic number is the number of protons only.
Is the number of protons equal to the atomic mass minus the atomic number?
No. For an isotope of an element, the number of neutrons, not protons, in the nucleus of an atom of the isotope is equal to the isotopic mass number minus the atomic number. The atomic number itself is the number of protons in the nucleus.
How do you find the number of neutrons in the nucleus of uranium?
Number of neutrons in an atomic nucleus = Atomic mass of an isotope - Number of protons in the nucleus For uranium the number of protons is 92; each isotope has of course a different mass.
