Early Periodic Table
Who discovered the 1st Periodic Table?
Mendeleev
Horizontal rows on the Periodic Table are called __________
periods
This element has 1 proton and 1 electron
Hydrogen
Alkali Metals
In general, as you go down a group, atomic radius ________
The early Periodic Tables were arranged in order of increasing
atomic mass
Vertical columns on the Periodic Table are called ______
groups / families
Bromine has this many protons
35
Chlorine is in a group of elements called _________
Halogens
decreases
The Modern Periodic Table is arranged in order of increasing ________
atomic number
The periodic table has this many periods/ rows
7
H, Li, K, Rb, Cs, Fr
The most reactive metals are found in Group ________
1 (Alkali metals)
Which element is a Noble Gas, and is in Period 3 of the Periodic Table?
Argon
group / family
Nonmetals are located on the _______ side of the Periodic Table
right
Name an element in the same period as Na
Mg, Al, Si, P, S, Cl, Ar
The most reactive nonmetals are found in group ______
17
This element is an Alkali Metal, and is larger than Cesium
Francium
This element was discovered by Mendeleev because it was a gap on his Periodic Table (HINT - we did a lab on it!)
Germanium
Properties of _______ include: malleable, ductile, good conductors of heat and electricity
metals
This element has a mass of 39 and 20 neutrons
Potassium (K)
Name an element that has similar chemical properties to Neon
Helium, Argon, Krypton, Xenon, Radon, Ogensson
Which element is in Group 12, Period 4
Zinc