SS2 Chemistry – Nitrogen and Its Compounds

NITROGEN AND ITS COMPOUNDS Nitrogen forms about 78% by volume of the atmosphere. It can be found in combined form in trioxonitrate (V) of sodium and calcium. It can also

SS1 ComputerS – Computer Virus

SS2 Chemistry – The Periodic Trend

CONTENT • The Periodic Properties of Elements: Atomic size, Ionic size, Ionization Energy, Electron Affinity, Electronegativity down the group and across the period. • Diagonal Relationship in the Properties of