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Helium ion with 2+ charge, an assembly of two protons and two neutrons.

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Ligand

A Lewis base in a coordination compound.

Collision Theory

Theory of reaction rates that states that effective collisions between reactant molecules must occur in order for the reaction to occur.

Ampere

Unit of electrical current, one ampere equals one coulomb per second.

 

20 interesting chemistry facts

20 interesting chemistry facts.

Alpha (a) Particle

Helium ion with 2+ charge, an assembly of two protons and two neutrons.

D -Transition elements (metals)

B Group elements except IIB in the periodic table, sometimes called simply transition elements EX. Fe, Ni, Cu, Ti .
For further information see Metals.

Melting Point

The temperature at which liquid and solid coexist in equilibrium, also the freezing point.

Reaction Stoichiometry

Description of the quantitative relationships among substances as they participate in chemical reactions.

Iron

Discovered : known to ancient civilisations.

Origin : The name comes from the Anglo-Saxon ‘iren’, and the symbol from the Latin ‘ferrum’, meaning iron.
Description :Iron is an enigma - it rusts easily and yet is the most important of all metals, world production exceeds 700 million tons a year. Small amounts of carbon are added to iron to produce steel and when chromium.
is added to this, the result is non-corroding stainless steel (small amounts of nickel may also be added). Iron is also an essential element for all forms of life. The average human contains about 4 grams, much of which circulates as haemoglobin in the blood, the job of which is to carry oxygen from our lungs to where it is needed. If the diet does not contain 10 milligrams a day, anaemia will eventually develop. Foods such as liver, kidney, molasses, brewer’s yeast, cocoa and liquorice contain a lot of iron.
Atomic No:26 Mass No:56

Equation of State

An equation that describes the behavior of matter in a given state, the van der Waals equation describes the behavior of the gaseous state.