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Negative logarithm of the concentration (mol/L) of the H3O+[H+] ion, scale is commonly used over a range 0 to 14.

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Cohesive Forces

All the forces of attraction among particles of a liquid.

Entropy

A thermodynamic state or property that measures the degree of disorder or randomness of a system.

Law of Conservation of Matter and Energy

The total amount of matter and energy available in the universe is fixed.

The most expensive metal in the world

Do you think the most expensive metal is gold? No! On earth there are more valuable metals. But we need to divide the value of metals that occur in nature, and metals - isotopes, which are obtained in special laboratories. Let’s look at natural metals first.

Standard Entropy

The absolute entropy of a substance in its standard state at 298 K.

Square Planar

A term used to describe molecules and polyatomic ions that have one atom in the center and four atoms at the corners of a square.

Aufbau ('building up') Principle

Describes the order in which electrons fill orbitals in atoms.

Aromatic Hydrocarbons

Benzene and its derivatives.

Coordination Sphere

The metal ion and its coordinating ligands but not any uncoordinated counter-ions.

Chemistry is a familiar school subject

Everyone liked to observe the reaction of reagents. But few know interesting facts about chemistry, which we will discuss in this article.