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Question:
(i) Differentiate between ionic, metallic, covalent and dipole-dipole bonds. Provide examples in each case.
(ii) With regard to electronic con?guration, what do all the elements in Group VII of the periodic table have in common?
(iii) Describe why hydrogen ?uoride (HF) has a higher boiling temperature than hydrogen chloride (HCl) (19.4ºC vs. - 85ºC), even though HF has a lower molecular weight.
(iv) On the basis of the hydrogen bond, explain the anomalous behaviour of water when it freezes. That is, why is there volume expansion upon solidi?cation?
(a) Copper has an atomic radius of 0.128 nm, a face-centered cubic crystal structure and an atomic weight of 63.5 g/mol. Compute
(i) the volume of a unit cell of copper
(ii) the atomic packing factor
(iii) the theoretical density of copper.
I am supposed to write a blanced chemical equation for Lead(II) nitrate (aq) and ammonium chloride (aq) creating a precipitate of lead(II) chloride. I wrote the unbalanced equation
Chemical properties of Cycloalkanes Cycloalkanes behave both such as alkenes and alkanes in their chemical properties. All cycloalkanes go through substitution reaction with ha
Q. Explain about Neutral and Amphoteric oxides? Neutral oxides have neither acidic nor basic properties and when dissolved in water, they give neutral solutions, e.g., CO, N
Q. Describe the Charles Law and show graph between temperature and volume? Ans. Charles' law describes the relationship between the temperature and the volume of a gas
Which electronic configuration for oxygen is correct according to Hund's rule of multiplicity: (1) 1s 2 , 2s 2 , 2p 2 x , 2p 1 y , 2p 1 z (2) 1s 2
What is the difference between a theory and a hypothesis? What is the difference between a hypothesis and a law? Is there a sequential move from one to another, amongst law, theory
Manufacture of acetic acid - Quick vinegar process (a) From ethyl alcohol (Quick vinegar process): Vinegar is 6-10% aqueous solution of acetic acid. It is acquired by fermen
conclusion of the topic?
Octane number - Characteristics of hydrocarbons It is utilized for measuring the knocking character of fuel utilized in petrol engine. The octane quantity of an offered sample
Can I get a compound from crude extract of plant by NMR and GC-MS?
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