A way of Listing elements
Periodic Table
True or False
Some columns are skipped in order for elements with the same number of valence electrons to line up on the same columns.
True
s a chemical element with the symbol Ne and atomic number 10. It is a noble gas.[10] a colorless, odorless, inert monatomic gas under standard conditions, with about two-thirds the density of air.
Neon
The periodic table was proposed by which Russian chemist
Dmitri Mendeleev
The only letter not in the periodic table is the letter
J
Elements are listed in the table by the structure of their
atoms
When valence electrons are line up on the same columns, the elements in the columns have similar ________
properties.
For gold the "Au" comes from the Latin word for gold "aurum".
Gold
What is the most dangerous element on earth
Plutonium
The elements located in Group IIA
alkaline earths
From left to right and top to bottom, the elements are listed in the order of their
Atomic Number
Each horizontal row in the table is a ______
period
The country Argentina is named after the which element (symbol Ag) which is argentum in Latin
Silver
what is the most abundant element in the Earth's crust
Oxygen
was the first element to be made artificially. It is the lightest element that has only radioactive isotopes (none are stable).
Technetium
atomic number, tells the number of _________in each atom.
Protons
The first one is short and only has which two elements?
hydrogen and helium.
This chemical element with symbol Fe (from Latin: ferrum) and atomic number 26. It is a metal that belongs to the first transition series and group 8 of the periodic table. I
Iron
The rarest element on earth is ______. There are probably no more than a few ounces of it on earth at any given time.
Francium
Alkali Metals
It is called "periodic" because elements are lined up in_____________
Cycles or periods
There are _____ columns or groups and different groups have different properties.
18
s a chemical element with the symbol Pb (from the Latin plumbum) and atomic number 82. It is a heavy metal that is denser than most common materials
Lead
How many Elements
118
the first scientific discovery of an element occurred in 1649 when Hennig Brand discovered
phosphorous.