Which of these are isotopes (NOT IONS or compounds) *
Ca+
Naci
O CHA
O Sodium-21
o Lithium-4
H2O
Oxygen-15
0 02
1
Helium-3
On
This is a required question

Which of the following is a conclusion that resulted from ernest rutherford’s scattering experiment? (will mark brainliest) a. the nucleus is negatively charged b. the atom is a dense solid and is indivisible c. the mass is conserved when atoms react chemically d. the nucleus is very small and the atom is mostly empty space