Writing Formulae Flashcards
1
Q
What do the prefixes mono-, di-, tri
and tetra mean when used in a name?
eg sulfur trioxide, phosphorus
trichloride, dinitrogen tetroxide.
A
mono - one, di - two, tri - three and tetra - four
SO3, PCI3, N2O4
2
Q
How do you find the valency for an element?
A
From Periodic table page 6 in data book
3
Q
How do you find the valencies for group/complex ions?
A
Page 8 data book
4
Q
What do you assume if there is no roman numeral given for a transition metal?
A
metal = 2 except for silver where valency = 1
