High School Chemistry Blog

[...] together, they form an ionic solid. The losing and gaining electron of the atom cause the electron configuration changing. The trend of electron configuration changing The unstable elements tend to [...]

[...] radon (Rn). Their atomic number are respectively 2, 10, 18, 36, 54 and 86, so that the electron configuration of noble gas atomic are : He : 2 Ne : 2 8 Ar : 2 8 8 Kr : 2 8 18 8 Xe : 2 8 18 18 8 Rn : [...]

[...] . In the covalent bond, electrons used together by the atoms so that the atoms has electron configuration such as electron configuration noble gas elements. For example, hydrogen has 1 valence [...]

[...] the element atom trend to gain valence electrons. If the atom of an element removes it’s valence electron the positive charge particle occurs due to differences or proton and electron number in it. [...]

[...] configuration such as electron configuration noble gas elements. For example, hydrogen has 1 valence electron and oxygen has 6 valence electrons. Both types of elements are formed of water molecules ( [...]

[...] four electron pairs to result stability. The system of electron configuration with eight valence electron named octet rule. Helium only has two valence electrons, so that it form an electron pair [...]

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[...] which has the lowest energy level. Two or more atoms can form a chemical bond using the valence electrons in order to form a molecule. If the atoms does not have a strong difference [...]

[...] valence electron named octet rule. Helium only has two valence electrons, so that it form an electron pair only. This system named duplet rule. If the atoms of an [...]

[...] configuration changing. There are two trends, first the element atom trend to remove valence electrons , and secondly the element atom trend to gain valence electrons. If the atom of an element [...]

[...] with trends to gain electron is named electronegative elements. Example 1.1 : Lithium has atomic number 3. It has electron configuration 2 1. It’s valence electron is 1 so lithium is unstable. To [...]

[...] . They are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe) and radon (Rn). Their atomic number are respectively 2, 10, 18, 36, 54 and 86, so that the electron configuration of noble gas [...]

[...] atomic number are respectively 2, 10, 18, 36, 54 and 86, so that the electron configuration of noble gas atomic are : He : 2 Ne : 2 8 Ar : 2 8 8 Kr : 2 8 18 8 Xe : 2 8 18 18 8 Rn : 2 8 18 32 18 8 [...]

[...] . The atoms bonded to obtain stable configuration that is formed as electrons configuration of noble gas elements. In the covalent bond, electrons used together by the atoms so that the atoms has [...]

[...] changing The unstable elements tend to reach similar electron configuration with nearly noble gas by electron configuration changing. There are two trends, first the element atom trend to remove [...]

[...] formula, which is H2O, so that no new substance is created. Chemical changes we know as a chemical reaction by a few characteristics: 1. changes of color. 2. changes in temperature. 3. the occurrence [...]

[...] reactions can be determined using a mathematical calculation, the amount of the heat in a chemical reaction can be measured using an experiment in the laboratory. Measurement heat reaction can be [...]

[...] ions doesn't exist. This proton combine with a water molecule form a hydronium ions by coordination covalent bond using a free pair electron from oxygen of the water molecule. [...]

[...] bond. In some cases, the electron pair shared come from only one atom of it, called coordination covalent bond or coordinates covalent bond or covalent dativ bond or semipolar covalent bond. At the [...]

[...] is the energy released by an atom (in the form of gas) when an electron capture to form negative ions. Since the energy is released, given the price of the electron affinity of the minus [...]

[...] positive ions. The lower the ionization energy, the easier an electron released an atom to form negative ions. In the periodic table, ionization energy values showed periodicity. In a period from left [...]