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The mass number of an atom is determined by the number of neutrons and protons. Since you already know the number of neutrons, you just need the number of protons, then you can add them together. I happen to know that iodine has 53 protons, so that means that the mass number is 127.It is the protons and neutrons added together so when you add 53 and 74 you get 127!
Hope that helped a lot!! :):):):):):):)
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What is the mass of 1 iodine atom?
The mass of 1 iodine atom is approximately 126.9 atomic mass units (u).
How many Nuetrons are there in one atom of boron whose mass number is 10?
There are five neutrons in one atom of boron with a mass number of 10. Boron has an atomic number of 5, so 10 (mass number) - 5 (atomic number) = 5 neutrons.
How many nuetrons are in phosphorus atom?
A phosphorus atom typically contains 16 neutrons. This can be determined by subtracting the atomic number, which is 15 for phosphorus, from its atomic mass, which is usually around 31 for the most commonly occurring isotope.
What is the sum of a proton and nuetrons in the nucleus of an atom?
Its the mass number of an atom.The mass of an atom is concentrated in the nucleus. Both protons and neutrons which are collectively known as nucleons are found within the nucleus.Mass of electrons are not considered to be contributing towards the mass no. of an atom as their size is small and thus their mass is negligible.
How many nuetrons in a sodium atom?
there are 11.99 neutrons in an atom of sodium
What is the total number of protons and neutron's in an atom called?
mass number = protons + nuetrons
What is the sum of the number of protons and the number nuetrons in an atom?
mass number
What is the sum number of protons and nuetrons in the nucleas of a atom?
The Mass Number.
How do you determine the number of nuetrons in an atom?
Number of Neutrons = Mass number - Atomic Number
What is the total number protons and neutrons in an atom called?
mass number = protons + nuetrons
How do you find the atomic mass number of an atom of an element?
add the number of protons and nuetrons together
What information must be known in order to calculate the mass number if an atom?
The mass number = the number of protons + the number of nuetrons. Each of these particles is considered to have a mass of 1 amu. (atomic mass unit) For example, Aluminum has 13 protons and 14 nuetrons, so it's mass number = 27.
What is the difference between an atomic number and mass number?
no. of protons+no. of nuetrons in an atom is known as mass no. of that atom.while no . of protons present in an atom is called its atomic no.thus, in 1st condition we consider both, no. of protons as well as no. of nuetrons and in the 2nd condition we just consider no. of protons.
The sum of the numberof protons and nuetrons in the nucleus of an atom?
The sum of the number of the protons and neutrons in the nucleus of an atom is called as atomic mass.
Which particles in a atom have a mass of 1?
protons and nuetrons
What does the atomic mass tell us?
it tells us that the number is equal to the number of protons plus the number of nuetrons in the nucleus of an atom
How do the nuetrons relate the the identity of an atom?
The number of neutrons and protons together constitutes the mass number of a single isotope of an element.
