Acovalent bond between to atoms results when the atoms lose or gain electrons share electron pairs transfer valence electrons conmpletely from one atom to the other realease energy

Asingle atom of an element has 21 neutrons, 20 electrons, and 20 protons. which element is it? ok o z

Bohr's model could only explain the spectra of which type of atoms? single atoms with one electron single atoms with more than one electron bonded atoms with one electron bonded atoms with more than one electron

Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.