C2.2 - Electronic structure Flashcards
1
Q
groups
A
shows how many electrons are in the outer most shell
2
Q
periods
A
shows the number of shells in an atom
3
Q
outer most shell =
A
highest occupied energy level
4
Q
Why do elements in the same group react similarly?
A
As they have the same number of electrons in the outer most shell.
5
Q
General properties of a metal
A
- good conductor of electricity
- higher melting/boiling points
- ductile/malleable.
- always form positive ions
6
Q
General properties of a non-metal
A
- electrical insulator
- brittle
- found above staircase of periodic table
- always form negative ions
7
Q
Group 0 aka
A
Noble gases
8
Q
Noble gases qualities
A
- full outer most shell = very stable atom
- cannot gain/lose electrons
- monatomic (single atom) gases - don’t react to form molecules
- boiling points increase as you go down the group
