2nd Monthly Test Flashcards
the building blocks of matter
Atoms
The most widely accepted model of the atom is
Niels Bohr’s planetary model.
Column (Right to left)
Group
Row (up to down)
Period
There are three main types of elements
metals, metalloids, and non-metals.
of an element can be seen by counting the group number
valence electrons
The most valence electrons an element can have is
8
most stable when its
8
s
sharp
p
principal
d
diffuse
f
fundamental
Max of s
2
max of p
6
max of d
10
max of f
14
are the electrons on the outermost energy level of an atom.
Valence electrons
atoms gain, lose, and share electrons to gain 8 valence electrons.
Octet Rule
lose/give Valence Electrons to nonmetals, so they have a positive charge
Metals
gain/receive Valence Electrons, so they have a negative charge
Nonmetals