Which 2 atoms are isotopes with each other? *
1 point
Atom
1
Protons
9
8
10
8
Neutrons
7
10
9
Electron
9
8
10
2
3
4
loo
Atom 1 and 2
Atom 2 and 4
Atom 1 and 3
Atom 3 and 4
Calculate the energy required to ionize a hydrogen atom to an excited state where the electron is initially in the n = 5 energy level. report your answer in kilojoules
20 pts ‼️ an unmanned spacecraft travels to mars. mars has a lower strength of gravity than earth. where in the image is the spacecraft’s weight the greatest?