Question

How do i found how many electrons protons and neutrons a element has

Answer 1

Answer:

Fundamental Subatomic Particles

The number of protons in the nucleus of the atom is equal to the atomic number (Z). The number of electrons in a neutral atom is equal to the number of protons. The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus.

Answer 2

Question : To find the number of protons, electrons and neutrons an element has.

Solution :-

Let us take an example element.

Na (Sodium) has mass number of 23 and atomic number of 11.

How to find the number of protons?

The number of protons is equal to the number of electrons in an element to make it electrically neutral. The atomic number of the element will tell you exactly how many electrons are there (refer electronic configuration).

Hence, you can find the number of protons with that concept.

How to find the number of neutrons?

Using this formula = mass number = protons + neutrons.

Na has 11 electrons and hence, it will have 11 protons. The mass number is given as 23amu. Hence the number of neutrons will be = 23 - 11 = 22

Hope this helps.