Description

ELEMENTS :
CARBON (IV , V) – 20
OXYGEN (I , II , IV) – 27
HYDROGEN (I , II) – 14
NITROGEN (III , IV) – 10
SULPHUR (II , IV , VI) – 13
PHOSPHORUS (III , IV , V) – 7
HALOGEN (I) – 8
METAL (I , II , III , IV , VI) – 14