Respuesta :
Answer: Answer choice B . 70 (35 protons + 35 neutrons)
Explanation:
Answer:
The estimated mass of the atom is 70 amu
Explanation:
An atom has a proton mass of 35, a neutron mass of 35, and an electron mass of 3.
Mass of an atom is equal to the sum of number of protons and number of neutrons.
In this case, number of protons p = 35
Number of neutron n = 35
So, the estimated mass of the atom will be :
[tex]M=35\ protons+35\ neutrons=70\ amu[/tex]
Hence, this is the required solution.
