Question

   The energy levels of electrons are related to their:

a)              Position on the Periodic table

b)             Atomic mass units

c)              Isobars

d)              Shells

e)              Isotopes

Answer 1

The energy levels of electrons are related to their:

d)              Shells

An early model of the atom was developed in 1913 by the Danish scientist Niels Bohr (1885–1962). The Bohr model shows the atom as a central nucleus containing protons and neutrons, with the electrons in circular electron shells at specific distances from the nucleus, similar to planets orbiting around the sun. Each electron shell has a different energy level, with those shells closest to the nucleus being lower in energy than those farther from the nucleus. By convention, each shell is assigned a number and the symbol n