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Atomic number tells how many protons are inside an atom's nucleus and therefore also how many electrons the atom has.
An atom's mass number is the number of protons AND neutrons in the atom's nucleus and this will vary for each isotope of an element.
The atomic number of an atom is equal to the number of protons in its nucleus. The mass number is the sum of the number of protons and neutrons in the nucleus. To find them, you can look up the element on the Periodic Table to determine the number of protons (atomic number) and the Atomic Mass (rounded to the nearest whole number) gives you the approximate mass number.
The mass number is the sum of the number of neutrons and the number of protons. Since the atomic number is the same as the number of protons, you can also say that the mass number is the sum of the atomic number and the number of neutrons.
The atomic number denotes how many protons there are in the atom, mass number - atomic number gives the number of neutrons in an atom.
If the atomic number of an element is 7, this means there are 7 protons and 7 electrons
Atomic Number is equal to the number of Protons. Atomic Mass Number is equal to the number of nucleons (nucleon is a Proton or Neutron). So to get the number of Neutrons, subtract the atomic number from the atomic mass number.
If the atom is electrically neutral (no charge), then the number of electrons will equal the number of protons.
Except for hydrogen-1 and helium-3, the mass is always at least twice as much as the number. The ratio between the mass and the number increases with increasing atomic number, but as far as I know never exceeds 2.5.
This is a nuclear decay equation. There are links below to a couple examples in related questions.
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How you calculate the atomic mass?
the Atomic Mass number is the number of protons/electrons in an atom
How do you calculate the atomic mas based on the number of protons and neutrons of an atom?
To calculate the atomic mass of an atom, you would add the number of protons and neutrons together. Protons and neutrons each have a mass of approximately 1 atomic mass unit (amu). The sum of the protons and neutrons will give you the atomic mass of the atom in atomic mass units.
How do you calculate the number of proton neutron and electron using atomic no and mass no?
To calculate the number of protons in an atom, use the atomic number (Z), which represents the number of protons. The number of neutrons can be calculated by subtracting the atomic number from the mass number (A = Z + N). Electrons are the same as the number of protons in a neutral atom.
Why do you calculate the number of electrons by the atomic mass and number?
You calculate the number of electrons by the atomic mass and number because elements have the same number of electrons as they do protons. The atomic number tells you the number of protons, which is also the number of electrons in a neutral atom. By using the atomic mass to find the number of neutrons, you can determine the overall charge and number of electrons in an atom.
How do you calculate the number of neutrons an atom of a specific element has?
You can calculate the number of neutrons an atom has by subtracting the atomic number (number of protons) from the atomic mass (rounded to the nearest whole number). Neutrons are the difference between these two values.
How do you calculate the atomic mass?
the Atomic Mass number is the number of protons/electrons in an atom
How you calculate the atomic mass?
the Atomic Mass number is the number of protons/electrons in an atom
How do you calculate the atomic mass number?
the atomic mass number is the number of protons/electrons in an atom
How do you calculate the number of neutron in the nucleus of an atom?
You calculate the number of neutron in the nucleus of an atom by : atomic mass - atomic number = neutron number. :) hope this helps
How do you calculate the atomic mas based on the number of protons and neutrons of an atom?
To calculate the atomic mass of an atom, you would add the number of protons and neutrons together. Protons and neutrons each have a mass of approximately 1 atomic mass unit (amu). The sum of the protons and neutrons will give you the atomic mass of the atom in atomic mass units.
Mass number used to calculate the number of?
The mass number is used to calculate the number of nucleons in an atom. It represents the sum of protons and neutrons in the nucleus of an atom. By knowing the mass number, one can determine the approximate atomic mass of the atom.
How do you calculate the number of proton neutron and electron using atomic no and mass no?
To calculate the number of protons in an atom, use the atomic number (Z), which represents the number of protons. The number of neutrons can be calculated by subtracting the atomic number from the mass number (A = Z + N). Electrons are the same as the number of protons in a neutral atom.
Why do you calculate the number of electrons by the atomic mass and number?
You calculate the number of electrons by the atomic mass and number because elements have the same number of electrons as they do protons. The atomic number tells you the number of protons, which is also the number of electrons in a neutral atom. By using the atomic mass to find the number of neutrons, you can determine the overall charge and number of electrons in an atom.
How do you calculate how many neutrons there are in an atom?
You can calculate the number of neutrons in an atom by subtracting the number of protons (which is the atomic number) from the atomic mass of the atom. The atomic mass is the sum of the number of protons and neutrons in the atom.
How do you calculate the number of neutrons an atom of a specific element has?
You can calculate the number of neutrons an atom has by subtracting the atomic number (number of protons) from the atomic mass (rounded to the nearest whole number). Neutrons are the difference between these two values.
How do you calculate nutrons?
neutron can be calculated by subtracting the atomic number of the particular atom from its mass number.
Would you use atomic number or mass number or both to obtain the number of particles in an atom?
You would use atomic number to obtain the number of protons in an atom, as it corresponds to the number of protons in the nucleus. The mass number is the sum of protons and neutrons and can be used to calculate the number of nucleons in the atom.
