Show:
period
groups
atomic number
atomic mass
elements
100
what are periods
number of energy levels
100
hydrogen is in what group?
1
100
what is carbons atomic number?
6
100
what is atomic mass?
weight of the atom
100
what are elements on the left side of the periodic table
metals
200
copper is on what period
4
200
what groups is halogens?
17
200
what are atomic numbers?
protons
200
what oxygens atomic mass
15.999
200
what elements have metals and nonmetals in it
metalloids
300
how many energy levels does iodine have?
5
300
what group are alkalian earth metals on
2
300
how do you find the atomic number
how many protons are in an atom
300
what is the atomic mass of platinum
195.085
300
what elements are in group 1
alkali metels
400
what period is uranium on?
7
400
what group are noble gas on?
18
400
what is golds atomic number?
What is 79
400
does the atomic number effect the atomic mass?
yes
400
are met els luster mostly or no
yes
500
what period are lanthanide metals on?
6
500
why don't we talk about groups 3 through 12?
they are transition metals
500
why does barium atomic number and lutetium atomic number jump
because of lanthanide metals
500
what is darmstadtium atomic mass
281
500
lead has what chemical symbol
Pb