How many protons neutrons and electrons are there in a neutral atom of 43k (potassium-43)?

The number of protons present in any atom are equal to the atomic number of that particular atom. Hence, as the atomic number of Potassium is 19 therefore, it contains 19 protons.

Number Neutrons:

The number of neutrons present in atom are calculated as,

# of Neutrons = Atomic Mass - # of protons

As given,

Atomic Mass = 43

# of Protons = 19

So,

# of Neutrons = 43 - 19

# of Neutrons = 24

Number of Electrons:

As we know for a neutral atom the number of electrons are exactly equal to the number of protons present in its nucleus. So, for 19 protons in neutral Potassium atom there must be 19 electrons.

samueladesida43 samueladesida43 · Answer 2 · 2021-09-03T20:24:47+02:00

There are 19 protons, 24 neutrons and 19 electrons in a neutral atom of 43K.

COMPONENTS OF AN ATOM:

An atom consists of three subatomic particles namely: neutron, proton and electrons.

In a neutral atom i.e. an atom with a charge of 0, the number of protons also known as the atomic number, is the same as the number of electrons.

The number of neutrons in an atom is calculated by subtracting the number of protons from the mass number. That is; no. of neutrons = mass no. - no. of protons (atomic number).

In this question, the mass number of potassium is given as 43 and the atomic number is known to be 19. Since the potassium atom is neutral, hence, the number of protons and electrons is equally 19.

No. of neutrons in the potassium atom is 43 - 19 = 24 neutrons.

Therefore, there are 19 protons, 24 neutrons and 19 electrons in a neutral atom of 43K.

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