The Atom Flashcards
what is the elemental force that keeps the nucleus together?
strong nuclear force
what is the force that causes the nucleus to come apart during radioactive decay
weak force
what is the weakest force in our universe
gravity
what is the force that keeps electrons from fleeing an atom
electromagnetic force
what letters are “the staircase” written on
B-Si-As-Te-At
(metalloids are Si-Ge, As-Sb, Te-Po)
how are the number of energy shells related to the period of an element on the periodic table?
the period number is the number of energy shells the atom has: Period 2 has 2 shells, etc.
atoms containing a different number of protons than electrons are
IONS
an atom with a different number of neutrons than protons is an
ISOTOPE
the property of an ion that makes it positive or negative it its
CHARGE