why do ions form
charge that atoms want to be
neutral charge or 0 charge
elements in group 16 are called what ions
an atom becomes this when it gives away electrons
a cation or positively charged
the ending on a non metallic element changes to what the majority of the time
the first element of the periodic table
hydrogen
atoms have to do do this to have a neutral charge
gain or lose electrons
the alanine earth metals will always have what charge
2+ charge
NaCl
change the name of oxygen when combined with Iron(II)
Oxide
name an element that is a noble gas
how many valence electrons are in group two
2 valence electrons
the charge of oxygen would be ____
-2
the ratio of Fe(I) and oxygen would be what
1:2
name this ionic compound KN3
potassium nitride
the atomic number of Be
4
an atom becomes this when it bonds with another element and gets a neutral charge
stable
the charge for Fe (III)
3+ charge
write out Iron (III) chloride
FeCl3
a polyatomic ion usually has what endings
-ate or -ite
the number of protons that oxygen has
8
state what is the octet rule
chemical rule of thumb that reflects the observation that main group elements tend to bond in such a way that each atom has eight electrons in its valence shell
the charge of all noble gasses would be
write out write out calcium carbonate
CaCO3
name this compound MgSO4
magnesium sulfate
name a gas in the lanthanide (rare metals) group
La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Ho, Er, Tm , Yb