862^-10 my friend this is the answer
Since this element has 50 electrons you know that it has 50 protons. The number of proton= the atomic number. Atomic number 50 is tin. The atomic symbol for tin is Sn and the weight is 120. So this is the tin 120 isotope
Answer:
Maritime tropical air mass
Continental polar air mass
Electronic configuration of Rb: 2.8.8.8.8.3
Valence electron is 3....
B
Electrons are found in shells or orbitals that surround the nucleus of an atom
