If an element has a mass number of 4 and an atomic number of 2 how many neutrons does the element have?
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Atomic number minus number of protons. you don't
To find the number of neutrons simply subtract the atomic number from the atomic mass. In this case there are two neutrons.
The 'standard' hydrogen atom has atomic number 1, atomic mass 1, no neutrons. Although there are 2 other isotopes of hydrogen: - (cant confirm name) which has atomic mass …2 and 1 neutron. - (cant confirm name) has atomic mass of 3 and 1 neutron. All isotopes have atomic number 1.
Why is the atomic mass of an element not given as a whole number when the protons and neutrons are whole numbers?
When you determine the atomic weight of an element you are taking the average weight of a mole of such atoms. Mole = 6.022 Ã 10 23 of anything. (A mole is a measurement of… "amount", so it can refer to anything, but is most commonly used with atoms). Most elements have more than one isotope, that is, there is some variance in the number of neutrons they contain. Both the protons and neutrons provide mass but only the protons provide chemical and physical characteristics (to any degree needed for this question that is). Therefore, when we weigh a mole of any element we are not getting a sum of exact multiples of a single mass but also a few slight variants as well due to the isotopes. When we take the average of such a sum what we are getting is therefore a weighted average, dependent on the percent abundance of all isotopes..
The atomic number would be 80 - 41 = 39 .
This element has an atomic number of 82 and a mass number of 207. It's lead (Pb), and it's Pb-207, one of the three stable isotopes of lead. A link is provided below.
What is the atomic number and the mass number of an atom of an element with 5 protons and 6 neutrons?
The atomic number of an element is the number of protons it has in its nucleus. In this case, it would be 5. The atomic weight is the sum of the protons and neutrons in …its nucleus. In this case, it would be 11.
If the atomic number of an element is 9 and the mass number is 19 how many neutrons does the atom have?
atomic number = number of protons mass number = # protons + # neutrons # neutrons = mass # - atomic # = 19 - 9 10 neutrons
The mass number is the sum of the number of neutrons and protons. If we already know that there is one neutron and the mass number is two, then that means there is one proton.… Any atom with one proton is hydrogen. This particular isotope is called deuterium.
If an element has an atomic number of 8 and an atomic mass of 14 then how many neutrons does it have?
The mass is made up of protons and neutrons and the atomic number is the number of protons. Therefore the number of neutrons is the atomic mass minus the atomic number, i.e. 1…4-8 = 6.
Well, if an atom has 16 protons, then it is Sulfur, which is a non metal. If it had 16 neutrons, then it would be another isotope of sulfur, which would make it Sulfur-32. The…n, unless it has a charge, there would also be 16 electrons.
What would the mass number of an element is 59 and its atomic number is 27 how many neutrons are contained in the nucleus?
The mass number is the sum of the atomic number and the number of neutrons. Therefore, the number of neutrons in this isotope is 59 - 27 or 32.
An atom of an element with atomic number 48 and mass number 120 contains how many protons neutrons and electrons?
there were 48 protons and electrons,72 neutrons
This question can not be properly answered unless a specific isotope of the element is specified. The number of neutrons is always equal to the mass number of the isotope minu…s the atomic number of the element.
In Noble Gases
How many electrons protons and neutrons are found in the helium atom having atomic number 2 and mass number 4?
Two each of protons, neutrons, and electrons.
In Atomic Mass
The element is titanium and its atomic mass is 47.867.