paramagnetic chemistry

(e.g., O 2 , Cu 2 + , Fe 3 + ) are attracted by a magnetic field but lose their magnetism in the absence of the magnetic field. This property is shown by those substances whose atoms, ions or molecules contain unpaired electron..

Octahedral Complexes - 1) Shape - Octahedral Paramagnetic - One unpaired electron. ..

The transition metals generally contain one or more unpaired electrons in the (n-1)d orbital. Due to these unpaired electrons they behave as paramagnetic substances. These substances are attracted by the magnetic field. The transition elements that contain paired electrons behave as diam..

(i) Sodium is heavier than potassium due to increase in atomic size of potassium, which makes its density lower. (ii) Sodium forms peroxides, which are colorless and diamagnetic with oxygen while potassium forms superoxide. The ion K + is larger and has a very weak positive field. Thus this i..

If all the electrons in the molecule of a substance are paired, the substance is diamagnetic. On the other hand, if there are unpaired electrons in the molecule, the substance is paramagnetic. Magnetic moment can be calculated as follow..

This is formed by the combination of hydrogen atom containing one electron and hydrogen ion having no electron. Therefore, this ion has only one electron. fig 1.17 - Molecular orbital energy level diagram for H 2 + ion The positive value of bond order indicates that the molecule is sta..

'd' block elements have valence electrons in both their outermost and penultimate shells. Valence electrons belonging to the outermost shell or both shells may take part in a chemical reaction. Accordingly, more than one oxidation state can be shown by the same element; this is termed as variable..

Helium Molecule Ion (He 2 + ) - This molecule contains three electrons, two from one helium atom and one from the other helium (He + ) ion. The molecular orbital electronic configuration of the molecule is: Its bond dissociation energy has been found to be 242 kJ mol - 1 . The molecule is expected ..

Like all other first elements of the groups, oxygen also differs from its family members. The anomalous behavior of oxygen is due to its (i) small size (ii) high value of ionization energy and electronegativity (iii) absence of d-orbitals in the valence shell. Some of the important differences betw..

Anomalous Behavior of Oxygen - Like all other first elements of the groups, oxygen also differs from its family members. The anomalous behavior of oxygen is due to its (i) small size (ii) high value of ionization energy and electronegativity (iii) absence of d-orbitals in the valence shell. Some of..