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Q. Illustrate Chemical nomenclature?
Ans.
Chemical nomenclature is the system of names that chemists use to identify compounds precisely. The systematic method of naming compounds is vital to the study of chemistry, because when a new substance is formulated, it must be named in order to distinguish it from all other substances.
Using this systematic method of naming compounds, the positive part is named and written first, followed by the negative part. The names of the elements in the compound are modified with suffixes and prefixes to identify the different types of compounds.
Atoms can combine to form compounds by losing, gaining, or sharing electrons. Chemists have discovered certain trends: it seems that elements tend to form ions with specific charges, and also tend to form only a certain number of covalent bonds. This will be discussed in the following section on oxidation numbers.
zinc+oxygen
As the electron move away from the nucleus,its potential energy
Explain in detail about the Allotropy Allotropy refers only to dissimilar forms of an element within the similar phase or state of matter (i.e. different solid, liquid or gas
Monosaccharides - Biomolecules These are very simple one unit non-hydrolysable sugars. They have the common formula C n H 2n O n where n changes from 3 to 9 carbon molecules.
How is chemistry important in medicine & healthcare?
A covered glass tube contains 2.25g of copper and 3.32g of sulphur. The mass of the tube as well as its contents is 18.48 g. Upon heating a chemical reaction forms copper(II) sulph
The maximum number of electrons accommodated in 5f orbitals are: (1) 5 (2) 10 (3) 14 (4) 18 Ans: 14
Melting point - physical charterstics of monocarboxylic acids (a) The melting points of carboxylic acids do not change smoothly from one member to other member. (b) The melt
IN AMMONIUM ION NITROGEN DOESNT HAVE VALENCE ELECTRONS IN ITS VALENCE ORBITAL.
The present atomic weight scale is based on: (1) C 12 (2) O 16 (3) H 1 (4)C 13 Ans: C 12
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