How are oxides laid out in the unity formula system?

Unit 4 Topic 3
The Unity Formula

Oxides are categorised and listed according to their chemical formula as flux (RO & R2O monoxides), stabiliser (R2O3, sesquioxides) and glass-former (RO2, dioxides).

The format may either be horizontal in three columns or vertical as one column divided into three sections.

The horizontal unity formula layout

RO, R2O
Flux
R2O3
Amphoteric
Stabiliser
RO2
Acid
Glass-former
0.2
K2O
0.4
Al2O3
2.6
SiO2
0.3
Na2O
0.1
B2O3
0.2
TiO2
0.3
CaO
0.2
MgO

The vertical layout

0.2
0.3
0.3
0.2
K2O
Na2O
CaO
MgO
RO, R2O
Flux
0.4
0.1
Al2O3
B2O3
R2O3
Amphoteric
Stabiliser
2.6
0.2
SiO2
TiO2
RO2
Acid
Glass-former
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