A Ligand that exerts a weak crystal or ligand field and ge- nerally forms high spin complexes with metals.
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- Use of diamonds
Diamond is a crystalline modification of pure carbon formed in the deep interior of the Earth, in the upper mantle at depths of more than 80-100 kilometers, at exceptionally high pressure and temperature. It is the most precious stone, the hardest and most wear-resistant mineral, the most...
- 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.
- Diamonds Are Forever
Diamonds are still a girl's best friend, right? We love the shiny gems. They are the most popular rocks sold today. But what exactly are they, anyway? Where do they come from? What else are they used for?
- Ozone
We breathe 24 hours a day, 7 days a week, consuming about 25 kg of air every day. It turns out that we practically predetermine our health by the air we breathe.
- Varieties of garnet minerals
The most famous type of garnet stone is pyrope (flaming). This is the "oldest of garnets", with a dense red color, similar to the grain of an edible garnet. Pyrope has a variety called rhodolite - a stone of dense pink or pink-purple color, which sometimes has the alexandrite effect and is used in...
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Valence Electrons
Outermost electrons of atoms, usually those involved in bonding.
Mass
A measure of the amount of matter in an object. Mass is usually measured in grams or kilograms.
Ternary Acid
A ternary compound containing H, O, and another element, often a nonmetal.
Ionic Bonding
Chemical bonding resulting from the transfer of one or more electrons from one atom or a group of atoms to another.
Oxidation Numbers
Arbitrary numbers that can be used as mechanical aids in writing formulas and balancing equations, for single- atom ions they correspond to the charge on the ion, more electronegative atoms are assigned negative oxidation numbers (also called Oxidation states).
Active Metal
Metal with low ionization energy that loses electrons readily to form cations.
Isomers
Different substances that have the same formula.
Viscosity
Resistance offered by the molecules of a liquid to flow is termed as viscosity.
Essential Oil
A plant extract that has a distinctive odour or flavour.
Atomic Radius
Radius of an atom.
