The resonance structures of nitric acid molecule are..

The three resonance structures for thiocyanate ion, SCN– are given above:

Give the most stable Lewis structure

The best reason for the most plausible Lewis structure [SCN]^-

Give the formula for the compound formed when element T combine with U and state the type of bond formed.

Antimony (Sb) is found in the fifth period and Group 15 of the periodic table. How many number of electron in the valence shell electronic configuration of antimony.

Based on its valence shell electronic configuration of Sb,(5s² 5p³), predict the possible formulae of fluorides of antimony.

State the hybridisation of the central atom in molecule SbF₃

State the hybridisation of the central atom in molecule SbF₅

Predict the shapes and polarity of the SbF₃ molecule

Predict the shapes and polarity of the SbF₅ molecule

State the hybridisation in formaldehyde

How many sp² hybrid orbital in the formaldehyde molecule?

How many sigma bond in the formaldehyde molecule?

Determine the electron pair arrangement of the central atom for ICl₄.

(All halogen in group 17)

Type of Van der Waals forces

Explain how the atomic size or molecular size bigger can influence the strength of the Van der Waals.

The boiling points of H₂O, H₂S and H₂Se are 100ºC, - 86ºC and - 42ºC respectively. State the intermolecular forces exist in highest boiling point molecule?

What is the similarities factor between H₂S and H₂Se?

Ethanol, CH₃CH₂OH and dimethyl ether, CH₃OCH₃ have the same molecular formula, C₂H₆O but different atom arrangement. Predict the compound that has the higher boiling point and higher solubility in water and explain.

Magnesium, Aluminium and Sulphur are elements in Period 3. Show the variation of melting points for Magnesium, Aluminium and Sulphur.

The physical properties of QCl_x terms of bonding and physical state at room temperature,