0
How many neutrons does an element have if the proton number is 15 and its atomic mass is 31?
Wiki User
∙ 11y ago
31 - 15 = 16 neutrons
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
What is the formula for the atomic number?
atomic number = number of proton in an element number of proton = number of electron mass number = number of proton + number of neutron therefore... atomic number = mass number - number of neutrons
Do isotopes of an element have the same atomic number?
They have the same number of protons (and electrons) - so proton number. They have a varying number of neutrons - Mass number. Proton number and Atomic number mean the same things, so Isotopes of an element have the same atomic number.
Which element's atomic number is the same as it's atomic weight?
Hydrogen, because it has one proton and no neutrons, thus has an atomic mass of 1, and is element 1.
What is the formula for atomic number?
atomic number = number of proton in an element number of proton = number of electron mass number = number of proton + number of neutron therefore... atomic number = mass number - number of neutrons
The combined number of protons and neutrons?
Number protons + number neutrons is called the mass number or the atomic mass.
Does sodium have ten neutrons?
Actually, the element Sodium has eleven (11) electrons. You can tell by its Atomic number. (The number at the top left side of the element's box.)The Atomic number is both the element's proton and electron number.
The atomic number of an element determines its?
The atomic number of an element is determined by the number of protons in its nucleus.
What element has one proton and is found in water?
hydrogen atomic mass 1 atomic number 1 1 proton 1 electron 0 neutrons
How many neutrons are in the nucleus of a atom?
Atomic nuclei are composed of protons and neutrons. The atomic number of an element shows the number of protons in a nucleus of an atom of that element, while the atomic mass shows the average number of nucleons (either a proton or a neutron) in nuclei of that element. There can be an average because, unlike proton number, neutron number can vary from isotope to isotope. For example, carbon can have 6 or 7 neutrons and still be stable, but it always has to have 6 protons, or else it'd be a different element. Because atomic mass is equal to the number of protons and neutrons, one can find the number of neutrons by subtracting the number of protons from the total number of nucleons in a given isotope. To do this, subtract the atomic number from the atomic mass.
Different isotopes have different what?
The isotopes of an element must have a different amount of neutrons. I'm pretty sure you know what these are, but just in case: A neutron is a sub-atomic part of an atom, together with protons and electrons.
What is the charge on an element with 0 neutrons and 1 proton and atomic number 1?
This is Hydrogen. Assuming it is not ionized it will have no charge.
Two isotopes of the same element have the same number of what?
They have the same number of protons and different number of neutrons.
