consider a neutral atom with 30 protons and 34 neutrons. What is the mass number for the atom?
mass # = # protons + # neutrons
The mass number of an atom is equal to the sum of its protons and neutrons.
In this case, the atom has 30 protons and 34 neutrons. Therefore, the mass number for the atom would be:
30 protons + 34 neutrons = 64
So, the mass number for the atom is 64.
To determine the mass number of an atom, you need to know the total number of protons and neutrons in the nucleus. The mass number (symbolized as A) is the sum of the number of protons (atomic number, Z) and the number of neutrons (N).
Given that the neutral atom has 30 protons and 34 neutrons, we can calculate the mass number (A):
A = Z + N
A = 30 + 34
A = 64
Therefore, the mass number of the neutral atom is 64.