Prior Knowledge Questions The chart below gives the

Last updated: 4/29/2023

Prior Knowledge Questions The chart below gives the locations charges and approximate masses of three subatomic particles The approximate mass of each particle is given in universal mass units u Particle Proton Neutron Electron Location Nucleus Nucleus Orbitals Charge 1 0 Blank 1 1 Approximate mass 1u 1u Ou a The mass number of an atom is equal to the sum of protons and neutrons in the nucleus A helium atom has 2 protons and 2 neutrons What is the mass number of this atom 7 b The atomic number of an element is equal to the number of protons in each atom of the element All helium atoms have 2 protons What is the atomic number of helium