The sum of the total number of protons and neutrons present in the nucleus of an atom is known as-
Mass number
The correct answer is mass number.
The total number of protons and neutrons present in the nucleus of an atom is known as the mass number. It is represented by the letter A.
Additional Information:
Avogadro's number refers to the total number of units in one mole of any substance. It is equal to $6.022 \times 10^{23}$. This is a constant value.
The atomic number is the number of protons present in the nucleus of an atom. It is represented by the letter Z.
Important Questions from Structure of Atom
- How many moles of He atoms are present in its 20 u mass ?
Which of the following electron transition in hydrogen atom will require largest amount of energy?
A species having 8 electrons in the third shell is very reactive while the other species having 8 electrons in the third shell is very inactive they are :
Which of the following is the general formula for saturated hydrocarbons?
Which one of the following is the average atomic mass of chlorine atom?
