History
Who was the father of the periodic table?
Dmitri Mendeleev
What does the Lewis Dot Diagram show?
It shows the total number of valence electrons
What is Magnesium's chemical symbol
Mg
What is the chemical symbol of Boron?
B
What is the chemical symbol of Carbon?
C
When did Mendeleev start the development of the periodic table?
1869.
What does the Bohr diagram show?
It shows the total number of electrons an atom has.
How many metals are in group 12
4
How many metalloids are in the nitrogen family?
2
How many non metals are in the noble gasses family?
6
How many elements were there discovered in 1863?
56
What is a Covalent bond and what is it formed between?
Type of bond formed when two or more atoms share electrons. Formed between non metals.
What family is Gallium in?
The Boron Family
What family is Silicon in?
Carbon Family
What family is Carbon in?
Carbon
What scientist helped Mendeleev form the periodic table?
Antoine-Laurent de Lavoisier and John Newlands
What is an ionic bond and what is it formed between?
A bond formed between a metal and nonmetal. It takes a electron, it does not share it.
How many neutrons does tin have.
69
Name two characteristics of metalloids
Shiny, brittle, and semi conductor.
Name 2 characteristics of non-metals.
Poor conductors, non ductile/brittle, dull, mostly gasses.
How many elements have been recently discovered on the periodic table.
3
A cation is a positively charged atom (metal). An anion is a negatively charged atom (nonmetal).
How many metals are on the periodic table?
91
How many metalloids are on the periodic table?
7
How many non-metals are on the periodic table?
17