0
How many neutrons have an atom with a mass number of 20 and 11 neutrons?
Wiki User
∙ 13y ago
How many neutrons would it have if it had 11 neutrons? 11.
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
Which subatomic particles makes up most of the mass off the atom?
The major contribution to the mass of an atom is from protons and neutrons; electrons have a known but negligible mass.
How many neutrons are in an atom with the mass number being 186?
The atomic number (number of protons) of the element is needed to tell the number of neutrons. Mass number = atomic number + number of neutrons.
How many neutrons does an atom of U-251 have?
Number of neutrons = Mass number - Atomic number = 251 - 92 = 159
How many protons and neutrons are in the nucleus of the atom?
No it is not the atomic number. We call it mass number.
How can you determine the number of neutrons in an isotope?
One doesn't generally "calculate" the number of neutrons. The number of neutrons in an atom is always equal to the number of protons, and the number of protons can be found on the Periodic Table of Elements, which can easily be found on the internet or in a science textbook.
How many neutrons are in one atom?
The number of neutrons depends on the atom. In general, mass number = atomic number + number of neutrons.
What is the number of neutrons in an atom affects the atomic what?
The number of neutrons in an atom can affect the atomic mass of an atom.
How do you find out how many neutrons a atom has?
Mass number = Atomic number (or number of protons) + Number of neutrons
How many neutrons does an atom of nitrogen have if the mass number is 13?
6 neutrons
How many neutrons are in an Osmium atom of mass number 188?
112 neutrons
A Lithium atom has an atomic mass of 6 How many neutrons does this atom have?
This atom has three neutrons. The atomic mass number is the sum of the protons and neutrons. All atoms of the same element have the same number of protons (lithium has three), so the neutrons have to account for the rest of the mass. 6 (the mass number)-3 (the number of protons in a lithium atom)=3. So this atom must have three neutrons.
How many neutrons are there in an element having a mass number of 155 and an atomic number of 63?
The number of neutrons in the nucleus of an atom is always the difference between the mass number of the atom and the atomic number of the atom. Therefore, in this instance, there are (155 - 63) or 92 neutrons in the atom.
Is the number of neutrons in an atom known as its mass number?
No, neutrons + protons = mass
What is the total amount of protons and neutrons in an atom?
The total amount of protons and neutrons in an atom is its mass number.
If the atomic mass of an atom is 48 and the atom contains 20 protons how many neutrons does the atom contain?
28. Atomic mass - Atomic # (same as the number of protons) = number of neutrons
How do you tell how many neutrons are in an atom with the atomic number of 12?
Mass number is needed to answer this correctly. Mass number = number of protons + number of neutrons
What is the sum of protons and neutrons in an atom?
Mass number!:)
