What is the name of Group 1 in the periodic table.
Alkali Metals.
100
Atomic number of Scandium is ____ ?
22
100
Define atomic number.
The atomic number of an element is the number of protons in its nucleus.
100
What is the atomic symbol of Nickel ?
Ni.
200
What is the atomic number of Potassium ?
19.
200
The metals in Group 2 are called _____________?
Alkaline Earth Metals.
200
How is the Periodic Table arranged today?
By increasing atomic number.
200
Define valence electron.
Valence electron are the electrons in the outermost energy level of an atom.
200
Spell Fluorine and give the atomic symbol.
F-L-U-O-R-I-N-E.
The atomic symbol is F.
300
What has an atomic number of 31 ?
Gallium.
300
True or False?
Nonmetals have high conductivity.
False.
300
Define group and periods or you may compare them.
Groups are vertical COLUMNS in the periodic table.
Periods are horizontal ROWS in the periodic table.
300
Name the element whose atomic number is As. Then spell it.
Arsenic. A-R-S-E-N-I-C.
400
Which element has the atomic number of 27 ?
Cobalt.
400
True or False?
Halogens, which are in Group 17, are the most reactive nonmetals.
True.
400
Who was the Russian scientist that first organized the elements found at that time.
Dmitri Mendeleev.
400
The number of protons and neutrons in the nucleus of an atom is the atom's ______ ?
Atomic mass
400
Give the atomic symbol for Mercury and spell it.
Hg. M-E-R-C-U-R-Y.
500
What is the atomic number of Strontium ?
38.
500
True or False?
Group 18 are the most reactive.
False.
500
Name three properties of Metals.
~ Solid at room temperature.
~ Malleable and ductile.
~ Have luster - are shiny.
~ Are high in conductivity.
~ Tend to lose electrons in chemical reactions.
500
The elements in Group 18 are the ____ ?
~BONUS: Define periodic table.~
~ 100 points ~
Noble gases.
~ BONUS: The periodic table organizes information about all known elements according to their properties.
500
Give the atomic symbol for Tin.
~BONUS : Atomic number Iodine.~
~ 100 points extra.