Groups
columns
What are good conductors of electricity?
Metals
20
Ca
40
Which number is the atomic number?
20
Where are protons found?
In the nucleus
What charge does group 1 have?
1+
What group has 8 valence electrons?
Nobel Gases
What ones are Not found freely in nature but Present in the earth's crust but not in their basic form?
Alkaline Earth Metals
20
Ca
40
What number is the atomic Mass?
40
What are valence electrons?
Increases
What 2 groups are the most reactive?
What are the most Highly Radioactive?
Lanthanides and Actanides
What is the first element in the alkaline earth metals?
Berylium
What is an isotope?
an element with different number of neutrons
What happens to the atomic mass as we move down the group?
Increases
What is the group in the middle of the table called that does not have regular patterns?
Transition metals
Which ones are highly reactive with water and can be cut by a knife?
Alkali Metals
What are the rules for how we write atomic symbols?
The first letter capitalized, the second lower case
What is an ion?
an element with a charge
What is shared amongst a group?
Characterestics
What are the two groups that are pulled out of the table?
Lanathanides and Actanides
Which ones combine with metals to form salts?
Halogens
In what periods do the lanthanides and actinides get inserted into the table?
6 and 7
How many electrons does a Li 1+ have?
2
What is shared amongst a period?
number of outer shells