Alkali Metals
What elements are located in the Alkali Metal group ?
Lithium, Sodium, Potassium, Rubidium, Cesium, Francium.
What element in the Alkali Earth Metals has the symbol (Sr) ?
Strontium
What elements are located in the group/family Halogens?
Fluorine, Chlorine, Bromine, Iodine and Astatine.
What elements are located in the Noble gases family/group ?
Helium, Neon, Argon, Krypton, Xenon, and Radon.
Who created the Periodic Table in 1869 ?
Dmitri Mendeleev
what are some physical properties of these elements?
These elements are shiny, soft, and have a sliver color.
What are some chemical properties of these elements ?
These elements are reactive and flammable.
What are some physical properties of Halogens ?
These elements have relatively low melting and boiling points.
What are the chemical properties of these elements ?
These elements have a low reactivity.
What is the electron configuration of Argon (Ar)?
1s22s22p63s23p6
Which Alkali Metals have the atomic number of 37 and atomic mass of approximately 85.468 ?
Rubidium (Rb)
What is the atomic mass of the alkali earth metal Barium (Ba)?
Approximately 137.33
What element has the atomic number of 53 and the atomic mass of approximately 126.90 ?
Iodine
What element has the atomic mass of approximately 20.180 and the atomic number of 10 ?
Neon (Ne)
How many valence electrons does Halogens have ?
Halogens have 7 valence electrons.
What is the electron configuration of Sodium (Na)?
1s22s22p63s1
How many valence electrons do Alkali Earth Metals have?
Alkali Earth Metals have 2 valence electrons.
What is the electron configuration for Fluorine (F)?
1s22s22p5
How many valence electrons does Noble Gases have ?
Noble gases have 8 valence electrons.
What element has a atomic mass of approximately 131.29, is a gas, and has 54 protons ?
Xenon