Noble Gases
What is Argon's atomic number?
18
Alkali metals are usually found as...
Salts
True/False:
Alkaline-Earth Metals have 6 valence electrons.
False, 2
How many valence electron are there in halogens?
7 valence electrons
Which element makes your voice squeaky after inhaling it?
Helium
What is special about these elements' electrons?
All the outer shells are full.
True/False:
Alkali aren't reactive.
False, they are very reactive.
Alkaline-Earth Metals are found in the __ group on the periodic table.
2nd
What group are halogens on the periodic table?
Group 7 (non metals)
Who invented the periodic table?
Dmitri Mendeleev
All are noble gases except...
a)Krypton
b)Xenon
c)Iodine
d)Oganesson
c)Iodine
Two factors describing Alkali Metals.
Could be any of these:
Malleable, shiny, soft, low density, ductile, and good conductors of heat and electricity.
Name one Alkaline-Earth Metal.
Beryllium, Magnesium, Calcium, Stronium, Barium, and Radium.
Name one halogen.
Fluorine, Bromine, Chlorine, Iodine, Astatine, and Tennessine.
Why is gold used so frequently?
It is a highly conductive.
True/False:
Most noble gases are stable at room temperature.
True
Why are alkali metals so reactive?
They have one valence electron in the outermost shell which they seek to lose in order to have a full outer shell.
List properties of Alkaline-Earth Metals. Give 2
Low boiling point, low melting point, low density, good conductors of electricty.
True/False:
All halogens react with the same intensity.
False
Where is iron found in the body?
Found in red blood cells used to carry oxygen.