Atomic Mass
Atomic mass increases moving _______ each group and ______ across a period
Down, Right
Electronegativity increases moving ___ each group and ____ across a period
Up, and right across
Atomic radius is defined as the distance from the nucleus to this part of the atom.
What is the outermost electron?
The most reactive metals are found in this group of the periodic table.
What is alkali metals (Group 1)?
Ionization energy is the energy required to do this to an electron
What is remove it from an atom?
This subatomic particle contributes significantly to atomic mass but does not affect atomic number.
What is a neutron?
Electronegativity is a measure of an atom’s ability to do this in a chemical bond.
What is attract electrons?
Atomic radius decreases as you move across a period because of this effect.
What is increasing nuclear charge?
The most reactive nonmetals are found in this group.
What is halogens
Ionization energy generally increases as you move in this direction on the periodic table.
What is up and to the right?
Oxygen (O), Carbon (C), Nitrogen (N), Boron (B)
Oxygen
This element is the most electronegative on the periodic table.
What is fluorine?
This element has the largest atomic radius in Period 2.
What is lithium?
Alkali metals increase in reactivity as you move in this direction down the group.
What is downward?
This element has the highest ionization energy of all known elements.
What is helium
Lithium (Li), Silicon (Si), Sulfur (S), Xenon (Xe)
Xenon
Electronegativity generally increases as you move in this direction on the periodic table.
What is up and to the right?
Nickel (Ni), Titanium (Ti), Calcium (Ca), Barium (Ba)
Barium
Noble gases are generally unreactive due to this feature.
What is a full valence shell?
Calcium (Ca), Iron (Fe), Cobalt (Co), Copper (Cu)
Copper
Gallium (Ga), Selenium (Se), Potassium (K)
K, Ga, Se
Noble gases have very low electronegativity values because of this reason.
What is having a full valence shell?
Zinc (Zn), Oxygen (O), Rubidium (Rb)
O, Zn, Rb
This is the most reactive metal on the periodic table.
What is francium?
Antimony (Sb), Sulfur (S), Cadmium (Cd)
Cd, Sb, S