Periodicity Flashcards
1
Q
Who created the first periodic table?
A
Dmitri Mendeleev
2
Q
What section of the periodic table is the s block?
A
-period 1
-groups 1 and 2
3
Q
What section of the periodic table is the d block?
A
transition metals
4
Q
What section of the periodic table is the p block?
A
groups 3, 4, 5, 6, 7, 8
5
Q
What block are lanthanides and actinides found in?
A
F block
6
Q
What happens to ionisation energy across group 3?
A
-increases
-due to more protons
7
Q
How do melting and boiling points differ between phosphorus, sulfur, chlorine and argon?
A
sulfur=highest melting point
argon=lowest melting point
8
Q
Why does silicon have a high melting point?
A
-macromolecular
-tetrahedral structure
-strong covalent bonds
