Atomic Number and Atomic Mass
Atomic number and Atomic mass:
Barium
Atomic number: 56
Atomic mass: 137
Protons, Neutrons, and Electrons:
Iodine
Protons: 53
Electrons: 53
Neutrons: 74
Elements in the same group have this in common.
Number of valence electrons
Form between a ( metal / non-metal) and a ( metal / non-metal ).
metal and nonmetal
Form between a ( metal / non-metal) and a ( metal / non-metal ).
Nonmetal and nonmetal
Atomic number and Atomic mass:
Krypton
Atomic number: 36
Atomic mass: 84
Protons, Neutrons, and Electrons:
Sulfur
Protons: 16
Electrons: 16
Neutrons: 16
Elements in the same period have this in common.
Number of energy levels
Cations are formed when (metals/nonmetals) (lose/gain) electrons and become (positive/negative)
metals / lose / positive
Name this molecule: H2O
(NOT water)
Dihydrogen monoxide
Atomic number and Atomic mass:
Phosphorus
Atomic number: 15
Atomic mass: 31
Protons, Neutrons, and Electrons:
Copper
Protons: 29
Electrons: 29
Neutrons: 35
Group and period of Indium
Group 13, period 5
Anions are formed when (metals/nonmetals) (lose/gain) electrons and become (positive/negative)
nonmetals / gain / negative
Name this molecule: CH4
Carbon tetrahydride
Atomic number and Atomic mass:
Hydrogen
Atomic number: 1
Atomic mass: 1
Protons, Neutrons, and Electrons:
Gold
Protons: 79
Electrons: 79
Neutrons: 118
Group and period of Potassium
Group 1
Period 4
Name two elements that might form an ionic bond.
Any metal and any nonmetal.
Name two elements that might form a covalent bond.
Any two nonmetals.
Atomic number and Atomic mass:
Mercury
Atomic number: 80
Atomic mass: 201
Protons, Neutrons, and Electrons:
Hydrogen
Protons: 1
Electrons: 1
Neutrons: 0
Antimony is in group 15. How many valence electrons does it have?
5
Name this molecule: NaF
Sodium fluoride
True or False:
Elements that form covalent bonds share electrons in order to be stable.
True