Power Plant Engineering
The mass number of a substance represents the sum of total number of

Protons and neutrons in a nucleus
Protons and neutrons in an atom
Neutrons and electrons in an atom
Protons and electrons in an atom

ANSWER DOWNLOAD EXAMIANS APP

Power Plant Engineering
In nuclear fission

The electrons of the element change
None of the listed here
The original elements change into completely different elements
The molecules rearrange themselves to form other molecules

ANSWER DOWNLOAD EXAMIANS APP