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Mole gram atoms Avogadro’s Mole is the number of a substance which contains Avogadro’s number (NA) of particle’s. The numbers can also be refer to as Avogadro’s constant. The symbols is given as L, the value is very large, can

Electromagnetic radiation Electromagnetic radiation is radiation which have both magnetic and electric properties.  Electromagnetic radiation occupied wide area of radiation that can be explained or group by frequency or it wavelength. The distance between the two successive peaks is called

Noble gas was discovered by a french astronomer Pierre’s Janssen in the year 1868. But before then noble gas was mistakenly isolated by henry cavendish in the year 1785 when he was investigating the compositions of air. Henry cavendish experiment

Noble gas was discovered by a french astronomer Pierre’s Janssen in the year 1868. But before then noble gas was mistakenly isolated by henry cavendish in the year 1785 when he was investigating the compositions of air. Henry cavendish experiment

increase of boiling point from helium to radon is as a result of increase of the atomic electron down the group of the noble gas from helium atom to radon. since van der waal force depend on the numbers of

The stronger the vanderwall force the higher the boiling point. To melt or boil a simple molecular substance we must overcome the intermolecular force. For example if not because of the intermolecular force that holds molecules together everything in the

Hybridization was introduced to explained the molecular structure when the valence bond theory fail to correctly predict them, it is experimental observation observed that bond angle in an organic compound are close to 109 degrees 120 degree or 180 degree

Hybridization was introduced to explained the molecular structure when the valence bond theory fail to correctly predict them, it is experimental observation observed that bond angle in an organic compound are close to 109 degrees 120 degree or 180 degree

Uncertainty principle is sometimes called indeterminacy principle. Warner Heisenberg, a German Physicist, from his experiment in year 1920s discover that the position and motion of particle wave cannot be pinned down. What its mean is that you can not find

directed number Numbers such as minus 2 plus 2 which has specifically stated direction are called directed number. Example add up -2 -3 +2 Solution -2 +2 -3 = +2-5 =4 Divide 8 by 2 Solution 8/2 = 4 Subtract

Element pose five combination powers. For example, 1 atom of oxygen combine with 2 atom of hydrogen, to form water, but 1 atom of chlorine combines with only 1 atom of hydrogen to form hydrogen chloride (HCl). With this, oxygen

General properties of Lithium Standard atomic weight (Ar) [6.938, 6.97] conventional 6.94 Appearance Silvery-white Atomic Number  (Z) 3 Group number Group 1 Period number Period 1 Block s-block element Electron per Shell 2, 1 Category of the element Alkali metal

GENERAL PROPERTIES OF HYDROGEN Standard atomic weight [1.00784, 1.00811] conventional: 1.008 Appearance colorless Atomic Number 1 Group number 1 Period number 1 Block s-block element Electron per Shell 1 Category of the element Diatomic non metal Electronic configuration 1S1 physical