PT Arrangement
In the Periodic Table, columns are called ____________
Groups
What was the inspiration for Mendeleev's table?
A card game like solitaire
How many valence electrons does Rb have?
1
In order to become more stable, will an atom of sodium gain or lose an electron?
Lose 1 electron
Group 1A is called the ________________
Alkali Metals
In the periodic table, rows are called ____________
Periods
What is Mendeleev's first name?
Dmitri
How many valence electrons does Ne have?
8
What charge will a chlorine ion have?
-1
Group 2A is called the ______________
Alkaline Earth Metals
How are groups organized in the modern periodic table?
By similar properties
How was each PERIOD organized in Mendeleev's table?
By increasing mass
How many valence electrons does He have?
2
What charge will a calcium ion have?
+2
Group 7A is called the _________________
Halogens
How are periods organized in the modern periodic table?
By atomic number
How was each GROUP organized in Mendeleev's original periodic table?
By similar properties
How many total electrons does magnesium have?
12
What charge will an aluminum ion have?
+3
The B Groups are called the ____________
Transition Metals
There are two periods listed below the rest of the periodic table. Why is this?
Why did Mendeleev leave blanks in his periodic table?
He was predicting the properties of undiscovered elements.
Most elements are most stable with ______ valence electrons.
8
What factor plays a major role in determining the chemical properties of elements?
Their number of valence electrons
Elements 57-70 are called the _____________
Lanthanide Series