Valence Electrons
Potassium (19)
1
Oxygen (8)
2
Atomic mass of krypton (Kr)
83.798
What kind of covalent bond would form between two oxygen atoms?
Double
What is the positively charged particle in an atoms?
Protons
Krypton (36)
8
Sodium (11)
3
Atomic number of francium (Fr)
87
What kind of covalent bond would form between a nitrogen and arsenic atom?
Triple
This is the term for atoms that have the same number of protons but different numbers of electrons
Isotopes
Helium (2)
2
Cadmium (48)
4
Atomic mass of mercury (Hg)
What kind of bond is sodium chloride?
Ionic
This is the term for an atom that has more protons than electrons
Ions
Polonium (84)
6
Erbium (68)
6
Atomic number of bromine (Br)
Pick out two elements that, when combined, would form a single bond
Any combination of the halogens (fluorine, chlorine, bromine, iodine, astatine, and tennessine)
The vertical columns on the Periodic Table are called what?
Groups
Name an element with five valence electrons
The answer could be nitrogen, phosphorus, arsenic, antimony, bismuth, or moscovium
Name an element with four electron shells
Answer could be potassium, calcium, scandium, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, gallium, germanium, arsenic, selenium, bromine, or krypton
How many neutrons are in an atom of Plutonium (Pu) with an atomic mass of 244?
150
Draw the covalent single bond between two sulfur atoms
Drawn here:
This is the term for the very reactive elements on the far left of the Periodic Table
Alkali