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15 questions
What are the vertical columns on the periodic called?
groups
periods
nonmetals
metals
metalloids
Which elements have 1 valence electron?
period 1
group 1
group 4
The electrons in the outermost shell (main energy level) of an atom; these are the electrons involved in forming bonds
alkali metals (group 1)
Halogens (Group 17)
atomic number
valence electrons
A subatomic particle that has a negative charge
nobles gases
protons
electrons
neutrons
neutron
A subatomic particle that has a positive charge and that is found in the nucleus of an atom
not able to conduct heat or electricity, little to no metallic luster
A subatomic particle that has a negative charge
A small particle in the nucleus of the atom, with no electrical charge
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