Question

What is the mass number of the zinc?

Answer 1

Hint: Mass number is equal to the sum of the number of neutrons and protons. Mass number is also called the atomic weight of the element. Atomic number is equal to the number of electrons of the element.

Complete answer:
- In the question it is given to find the mass number of zinc.
- We know that zinc belongs to the d-block element and it is also called a transition element.
- The atomic number of zinc is 30.
- The number of electrons in a zinc atom are 30.
- We will get the mass number by adding a number of protons and neutrons in it.
- The number of protons in the zinc are 30 and the number of neutrons are 35.
- The mass number of zinc = number of protons + number of neutrons.
- The mass number of zinc is as follows.
Mass number of Zinc = 30 + 35 = 65.
- Therefore the mass number of the zinc is 65.
- Means the atomic weight of the zinc is 65.
- The mass number of the zinc is not equal to the atomic number of the zinc because atomic number represents the number of electrons and the mass number gives information about the number of protons and neutrons.

Note:
For all the elements in the periodic table the mass number won’t be equal to the atomic number. From left to right in the periodic table atomic number and mass number of the elements is going to increase.