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You can't. To find the mass number, you need to know how many neutrons are in the nucleus (mass number = # of protons + # of neutrons). The atomic number is equal to the number of protons, and the charge tells you the number of electrons indirectly (net charge of atom = # of protons – # of electrons). Neither of these things tells you anything about the number of neutrons, which is what you need.
See the Related Questions to the left for more information.
What else can I help you with?
An Ion with a mass of 209 and atomic number of 84 and net charge of 4 plus?
The ion is a lead ion with a 4+ charge. Its atomic number is 84, and its mass number is 208 (since the mass number is one less than the atomic mass for this particular ion).
Why do you subtract the atomic number from the mass number?
We can find atomic mass and mass number in chemical elements. Atomic mass is about weight of the atom. Mass number is about total of neutrons and protons.
An isotope of an element with a relative atomic mass of 65 amu and 35 neutrons has a charge of 2 plus How many electrons does it have?
An isotope with 35 neutrons and a charge of 2+ means it has 33 electrons (atomic number - charge). The atomic number can be calculated by subtracting the number of neutrons (mass number) from the relative atomic mass, so in this case, the atomic number is 30 (65 - 35).
What and what make up the atomic mass?
The atomic mass of an element is the sum of the number of protons and neutrons in the nucleus of an atom. Protons have a positive charge and neutrons have no charge, contributing to the overall mass of the atom. The number of electrons, which have a negligible mass, is not included in the atomic mass.
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.
To determine the number of neutrons in an atom, what must be done?
To determine the number of neutrons in an atom, subtract the atomic number (number of protons) from the atomic mass number (rounded mass of the atom). Neutrons are particles found in the nucleus of an atom and carry no charge.
How do you figure out how many neutrons a atom has?
You find out the charge of nucleus (a number of protons), multiply it by mass of proton. Then substitute the result from the mass of nucleus and divide by mass of neutron. The result will give number of neutrons in the nuclei. waeva is da ansa hahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahaha!!
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.
An ion of iron has an 26 protons 30 neutrons and 23 electrons. What are its atomic number atomic mass and net charge?
Atomic number : 26Atomic mass : 55.845 Net charge : +3
What is the difference between the atomic number mass number and atomic mass?
We can find Atomic Mass and mass number in chemical elements. Atomic mass is about weight of the atom. Mass number is about total of neutrons and protons.
What is the relationship btw atomic mass and atomic mass number?
We can find atomic mass and mass number in chemical elements. Atomic mass is about weight of the atom. Mass number is about total of neutrons and protons.
An Ion with a mass of 209 and atomic number of 84 and net charge of 4 plus?
The ion is a lead ion with a 4+ charge. Its atomic number is 84, and its mass number is 208 (since the mass number is one less than the atomic mass for this particular ion).
Why is the atomic mass number not a whole number?
We can find Atomic Mass and mass number in chemical elements. Atomic mass is about weight of the atom. Mass number is about total of neutrons and protons.
Why do you subtract the atomic number from the mass number?
We can find atomic mass and mass number in chemical elements. Atomic mass is about weight of the atom. Mass number is about total of neutrons and protons.
An isotope of an element with a relative atomic mass of 65 amu and 35 neutrons has a charge of 2 plus How many electrons does it have?
An isotope with 35 neutrons and a charge of 2+ means it has 33 electrons (atomic number - charge). The atomic number can be calculated by subtracting the number of neutrons (mass number) from the relative atomic mass, so in this case, the atomic number is 30 (65 - 35).
What is the atomic mass of an element the number?
We can find Atomic Mass and mass number in chemical elements. Atomic mass is about weight of the atom. Mass number is about total of neutrons and protons.
How do you find electrons?
you can find electrons by subtract the atomic number and atomic mass.
