The boron atom of bbr3 has

one atomic orbital.
two atomic orbitals.
three hybrid orbitals.
four hybrid orbitals.

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.

Needthe meter is the standard unit for: 1) height 2) length 3) weight 4) mass

Which statement is best described as a atom