Lithium has 3 protons in the nucleus.
Atomic number is the number of protons or the number of electrons in the nucleus of a neutral atom.Mass number is the sum of the protons as well as the neutrons in the nucleus of an atom. ( sum of neutrons and protons = nucleons)Atomic number =number of protons =number of electrons
According to the question,
we have been given atomic number= 3
So, number of protons will be 3 and number of electrons will also be 3.
We can additionally calculate number of neutrons as follows-
number of neutrons= mass number - number of protons
= 6.941 - 3
≈ 4
Hence, the number of protons in lithium will be 3.
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The nucleus of Lithium has three protons.
The number of protons or electrons in the nucleus of a neutral atom is known as its Atomic number.
The total mass of an atom's protons and neutrons is known as its mass number. (neutrons and protons added together Equals nucleons)
Atomic mass= Mass number + Neutrons
Atomic number equals the sum of the protons and electrons
Since, atomic number given is 3
Therefore, protons in the nucleus will be 3.
Additionally, we may determine the neutron number using the formula below.
mass number = number of neutrons + number of protons
⇒ 6.941 = number of neutrons + 3
⇒ number of neutrons will be approximately 4.
Thus, lithium will contain three protons.
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