Structure 3.1 The periodic table: classification of elements Flashcards
1
Q
What is an alkali metal?
A
Elements in Group 1 (apart from H). Reactive metals + contain 1 valence electron
2
Q
What is a halogen?
A
Element in Group 17. Diatomic molecules. Reactive non-metals. 7 valence electrons
3
Q
What is a transition element?
A
Incomplete d shell as atoms/ions. Group 3-12 except Zinc
4
Q
Why is Zinc not a transition metal?
A
Has a full d subshell at every level
5
Q
What is a noble gas?
A
Group 18. Inert/unreactive. Single atoms
6
Q
What does a period indicate?
A
Number of shells occupied with electrons
7
Q
What does a group indicate?
A
Same number of electrons in outermost shell, subshell + orbital -> similar chemical properties
8
Q
What is a mnemonic to remember metalloids?
A
Boring Silly Goats Are At The Party
