1.
rows on the periodic table
2.
columns on the periodic table
3.
number of protons plus neutrons
4.
number of protons an atom has
5.
atom of the same element that have different neutrons
6.
smallest particle of an element
7.
bonds between nonmetals
9.
the positively charged center of an atom
10.
particles in the nucleus with a positive charge of 1+
11.
particles in the nucleus that are electrically neutral
12.
particles with a negative charge of 1-
13.
sum of the protons and the number of neutrons
14.
capital letter with 1 or 2 lowercase some from latin
15.
area around the nucleus of an atom where electrons are most likely to be found
16.
found on the left side of the stairstep line not including hydrogen
17.
all found on the right side of the stairstep expect hydrogen
18.
in the 1st group most reactive group of metals
19.
group 2 metal not found in their element form in nature
20.
group 18 nonmetals that are called this
21.
this sperates metals with nonmetals on the periodictable
