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periodic table
periodic table
periodic table
periodic table
periodic table
100
These metals are in the center of the periodic table
what is transition metals
100
sum of protons and neutrons 0
What is mass number
100
boron is classified as a _________
What is metalloids
100
Their are ______ radioactive isotopes
What is 34
100
least dense element
What is hydrogen
200
has 7 valence electrons
What is halogen family
200
atons of the same element that have numbers of neutrons in their nuclei
What is isotopes
200
Bromine is classified as a _________
What is halogens
200
The atomic number of Molybdenum
What is 42
200
one of the radioactive isotopes
Check your book because im not typing all of those
300
These gases are in the air we breath
What is noble gases
300
number of protons in nucleus
What is atomic number
300
Their are _______ allkali
What is 6
300
PT is the symbol for this element
What is Platnium
300
The symbol for Zinc
What is ZN
400
These elements are on the right of the periodic table
What is non-metals
400
uranium is a _______ metal
What is transition
400
Tin is classified as a _______ metal
What is post transition
400
One of the alkaline-earth metals
What is berylum , magnesium, calcium, Stomtium, barium, Radium
400
Element named after dimitri mendeleev
What is Mendelevim
500
Elements repeat in a reacurring pattern based on their atomic masses
What is periodic law
500
horizontal rows on the periodic table
What is periods or series
500
Verticle rows on the periodic table
What is Families or Groups
500
number of non-metals
What is 10
500
electrons in the outermost energy level
What is valence electrons