Periodic Table Flashcards
1
Q
How arranged the periodic table as it is today and how are elements arranged?
A
Mendeleev, by Atomic Number/similar properties.
2
Q
What is a ‘Period’ and what does this represent?
A
Rows, the number of occupied electron shells.
3
Q
What is a ‘group?’
A
Column, number of electrons in outer shell.
4
Q
Figure out the period and group of:
Si (2, 8, 4)
A
Period 3
Group 4
5
Q
How did the first version of the periodic table arrange elements?
A
Atomic weight.
6
Q
How are elements arranged on the periodic table?
A
Metals are on the left, non-metals are on the right and transition metals are in the middle.
7
Q
What kind of elements are in Group 0, 1 and 7?
A
Noble gasses, alkali metals and halogens.
8
Q
Properties of noble gasses?
A
- Boiling points increase moving down the group.
- Relative atomic masses increase going down the group. p
9
Q
Properties of Alkali Metals elements?
A
- Become more reactive going down the group.
- Lower melting and boiling points going down the group.
- Higher relative atomic masses going down the group.
10
Q
Properties of halogens?
A
- Become less reactive going down the group.
- Higher melting and boiling points going down the group.
- higher relative atomic masses going down the group.
