chemistry atomic structure elements

Sulphuric acid is a covalent molecule having hexavalent S atom. It has a tetrahedral structure...

Summary - Atoms are made up of three fundamental particles: electrons, protons and neutrons. Discharge tube experiments by William Crookes and J.J. Thomson led to the discovery of electron. Goldstein's experiment with the discharge tube having a perforated cathode led to the discovery of ..

Position of an element in the Periodic Table, its atomic number and atomic mass Periodic Table to identify metals, semimetals, nonmetals, and halogens Periodic Table to identify alkali metals, alkaline earth metals and transition metals, and trends in ionization en..

Position of an element in the Periodic Table, its atomic number and atomic mass Periodic Table to identify metals, semimetals, nonmetals, and halogens Periodic Table to identify alkali metals, alkaline earth metals and transition metals, and trends in ionization en..

Structure of Silica - A study of crystal structure of silica reveals that it forms a giant molecule as shown belo..

In diamond, the carbon atoms are arranged tetrahedrally (sp 3 hybridisation of C): each C atom is linked to its neighbors by four single covalent bonds. This leads to a three-dimensional network of covalent bonds...

In borax, two boron atoms are in triangular geometry and two boron atoms are in tetrahedral geometry. The ion is [B 4 O 5 (OH) 4 ] 2 - and the remaining eight water molecules are associated with the two sodium ions. Hence, borax contains tetranuclear units [B 4 O 5 (OH) 4 ] 2..

The first row of elements contains only two elements hydrogen and helium. Hydrogen (Z = 1) has only one electron and it goes to 1s orbital. In helium (Z =2) atom, the second electron can also go into 1s orbital. The electrons must have opposite spins, which are shown ..

The third row elements are from sodium to argon. The build up of these eight elements proceeds exactly in the same manner as discussed above. Here 3s- and 3p-orbitals are filled in place of 2s- and 2p-orbitals as has been done in case of Li to Ne. For e.g., the electronic conf..

Lewis Structures of Some Covalent Compounds - The steps in writing Lewis structures of covalent compounds are as follows: of the molecule by placing the atoms of the combining elements properly. Usually an atom, which forms the largest number of bon..