6.941 is the average mass of lithium's isotopes. The majority of lithium (on average about 92.5%) is lithium-7 with 3 protons and 4 neutrons while about 7.5% is lithium-6 with 3 protons and 3 neutrons. A number of other isotopes exist but only in trace amounts.
6.941 is the average mass of lithium's isotopes. The majority of lithium (on average about 92.5%) is lithium-7 with 3 protons and 4 neutrons while about 7.5% is lithium-6 with 3 protons and 3 neutrons. A number of other isotopes exist but only in trace amounts.
Lithium-7 has a mass number of 7 because it consists of 3 protons and 4 neutrons. The mass number is the total number of protons and neutrons in the nucleus of an atom.
It is just a weighted average of the amount of Lithium-6 there is and the amount of Lithium-7 there is. Since the number is much closer to 7, there is more Lithium-7 than there is Lithium-6.
The mass number of lithium 7 is 7.
Lithium is element #3. That, of course, is the atomic number - the number of protons. The atomic mass will of course depend on the specific isotope. The most common isotope is Lithium-7, that is, atomic mass = 7. Lithium-6 also occurs in nature as a stable isotope.
A neutral lithium atom has 3 electrons, the same as the number of protons, which is the atomic number of lithium. There is no lithium ion with a charge of 7+. If you mean lithium with a mass number of 7, the number of protons is 3 and the number of neutrons is 4.
There are 4 neutrons in a lithium-7 atom. Lithium, which has atomic number 3, has 3 protons in its nucleus. If its atomic number is 3 (which is the number of protons in its nucleus) and its mass number is 7, we can find the number of neutrons by subtracting the atomic number from the mass number. In this case, 7 minus 3 equals 4.
It tells us the total mass of Protons and Neutrons, in AMU, Atomic Mass Units.
Lithium by default contains 3 protons and 4 neutrons so its atomic mass is 6.941 amu (atomic mass units)
Lithium is element #3. That, of course, is the atomic number - the number of protons. The atomic mass will of course depend on the specific isotope. The most common isotope is Lithium-7, that is, atomic mass = 7. Lithium-6 also occurs in nature as a stable isotope.
The mass number of lithium is 7. This number represents the total number of protons and neutrons in the nucleus of a lithium atom.
A neutral lithium atom has 3 electrons, the same as the number of protons, which is the atomic number of lithium. There is no lithium ion with a charge of 7+. If you mean lithium with a mass number of 7, the number of protons is 3 and the number of neutrons is 4.
Lithium is an element with an atomic number of 3 and an atomic mass of 7.
Lithium is a metal element. Atomic mass of it is 7.
Naturally occurring lithium contains two isotopes. The common one has an atomic mass of 7. About one per cent of the lithium has an atomic mass of 6.The atomic mass of Lithium-Li is 6.941 grams.
There are 4 neutrons in a lithium-7 atom. Lithium, which has atomic number 3, has 3 protons in its nucleus. If its atomic number is 3 (which is the number of protons in its nucleus) and its mass number is 7, we can find the number of neutrons by subtracting the atomic number from the mass number. In this case, 7 minus 3 equals 4.
It tells us the total mass of Protons and Neutrons, in AMU, Atomic Mass Units.
Lithium's mass number is 6.941.
An isotope of lithium with an atomic mass of ten would have an atomic number of 3, meaning it has 3 protons. To find the number of neutrons, subtract the atomic number from the atomic mass: 10 (atomic mass) - 3 (atomic number) = 7 neutrons. Therefore, an isotope of lithium with an atomic mass of ten would have 7 neutrons.
Lithium Atomic number = number of proton = 3 Mass number = number of proton + neutrons = 7 Therefore number of neutrons = 7 - 3 = 4
The atomic mass of lithium is approximately 6.94 atomic mass units.