Periodic Table Trends

Francium is the most _____ element

Electropositive (tendency to release electrons)

Fluorine is the most _____ element

Electronegative (tendency to gain electrons)

What are all the diatomic molecules? (7) (Have No Fear Of Ice Cold Beer)

Hydrogen, Nitrogen, Oxygen, Fluorine, Chlorine, Bromine, Iodine

What are the states of all diatomic molecules at room temperature?

Gas: Hydrogen, Nitrogen, Oxygen, Fluorine, Chlorine

Liquid: Bromine

Iodine: Solid

Diatomic element vs. Diatomic molecule

All diatomic elements are diatomic molecules, but not all diatomic molecules are pure element (NaCl)

Most metals are in what state of matter at room temperature?

Solid (Hg is a liquid at room temperature)

Most non-metals are in what state of matter at room temperature?

Gases (Ga is a solid at room temperature)

What are all the metalloids? (Beyonce Sings Great And Acts Terribly. (Sometimes PeriodT))

Boron, Silicon, Germanium, Arsenic, Antimony, Tellurium, sometimes Polonium

Metals tend to form ____, while non-metals tend to form ____

cations, anions

Most heavy elements (90> atomic number) are _____

radioactive (inner transition metals)

What are the properties of metals?

malleable, ductile, high luster, good conductors of heat, high density, high melting point, good conductors of electricity, will bond with nonmetals and polyatomic ions

Define reactive

How likely an element is to undergo a chemical change

Define malleable

is capable of being extended or shaped by beating with a hammer or by the pressure of rollers

Define luster

the state or quality of shining by reflecting light

Define ductile

Ability to be drawn out into wire

What are the properties of nonmetals?

not malleable, not ductile, not lustrous, not good conductors of heat, low density, low melting point, not good conductors of electricity, will bond with metals, other nonmetals, or with themselves and sometimes metalloids, form anions, most are gases at room temperature

How many elements are there?

118

How many elements occur naturally in nature?

88

How is the periodic table organized?

By increasing atomic number from left to right

Who created the periodic table and when?

Dimitri Mendeleev in 1869

Physical appearance of Hydrogen, Nitrogen, and Oxygen

A colorless gas

Physical appearance of Bromine

A reddish-brown liquid

Physical appearance of Iodine

A bluish black solid

Physical appearance of Fluorine

Pale yellow gas

Physical appearance of Chlorine

Greenish yellow gas

Elements in the same period have what in common?

The same number of electron shells