The atomic number is the number of
(55) ______ (positively charged particles)
(56) in the ______. It is unique for each
(57) element.
(58) The ______ mass number of the element
(59) ______the number of ______and ______
(60) (neutral, no charge) in the nucleus.
(61) ______ (negatively charged particles) are also in the atom. Atoms usually have (62) an ______number of ______and electrons. When the ______of protons and (63) electrons is not equal the element is called an ______.
(55) protons
(56) nucleus
(57) chemical
(58) atomic
(59) protons and neutrons
(60) neutrons
(61) electrons
(62) equal
(63) ion
(55) protons
(56) nucleus
(57) chemical
(58) atomic
(59) represents, protons, neutrons
(60) neutrons
(61) Electrons
(62) equal
(63) number, ion
The atomic number is the number of (55) protons (positively charged particles) (56) in the nucleus. It is unique for each (57) element.
The (58) mass number of the element represents the total number of (59) protons and neutrons (neutral, no charge) in the nucleus.
(61) Electrons (negatively charged particles) are also in the atom. Atoms usually have (62) an equal number of protons and electrons. When the (63) number of protons and electrons is not equal, the element is called an ion.