Periodic Table and Valency of Elements
Group IA, IIA and IIIA consists of metals of normal elements. They have 1, 2, or 3 valence electrons which they can easily donate to acquire the configuration of nearest noble gas. They become positively charged i.e., cations. ..
Group IA, IIA and IIIA consists of metals of normal elements. They have 1, 2, or 3 valence electrons which they can easily donate to acquire the configuration of nearest noble gas. They become positively charged i.e., cations. ..Second Row Elements
In lithium (Z =3), the third electron goes to the next 2s orbital. In Beryllium (Z = 4), the fourth electron fills 2s orbital and in boron (Z = 5), the next electron goes to the next available 2p orbital. In carbon, the sixth electron is also to go into the 2p orbital as 2p subshell can a..
In lithium (Z =3), the third electron goes to the next 2s orbital. In Beryllium (Z = 4), the fourth electron fills 2s orbital and in boron (Z = 5), the next electron goes to the next available 2p orbital. In carbon, the sixth electron is also to go into the 2p orbital as 2p subshell can a..Atomicity of a Molecule of an Element
The number of atoms, which constitute one molecule of an element, is called its atomicity. Phosphorus: P 4 - 4 atomicity Sulphur: S 8 - 8 atomicity Oxygen: O 2 - 2 atomicity Recently a different form of carbon - C 6 0 has been discovered. It is named buckminsterfullerene. Depending upon t..
The number of atoms, which constitute one molecule of an element, is called its atomicity. Phosphorus: P 4 - 4 atomicity Sulphur: S 8 - 8 atomicity Oxygen: O 2 - 2 atomicity Recently a different form of carbon - C 6 0 has been discovered. It is named buckminsterfullerene. Depending upon t..f - block Elements
f - block Elements - The f - block elements are also called as inner transition elements. As the last electron enters the f-orbital these elements are called as f - block elements. These are divided into two series. They are: Lanthanides and actinid..
Fourth Row Elements
In potassium (Z=19) and calcium (Z=20), electrons enter the 4s-orbitals in accordance with the fact that 4s-orbital is slightly lower in energy than 3d-orbital. ..
In potassium (Z=19) and calcium (Z=20), electrons enter the 4s-orbitals in accordance with the fact that 4s-orbital is slightly lower in energy than 3d-orbital. ..Elemental state and chemical reactivity
Nitrogen is a colorless gas and exists as diatomic. The two nitrogen atoms are held together by triple bond and have very high bond dissociation energy (945 kJ mol - 1 )...
Nitrogen is a colorless gas and exists as diatomic. The two nitrogen atoms are held together by triple bond and have very high bond dissociation energy (945 kJ mol - 1 )...The s- Block Elements Introduction
Introduction - The long form of the periodic table is based upon the filling of a particular shell and has been accordingly divided into four blocks i.e. 's', 'p', 'd' and 'f' blocks. The 's' block elements involve the filling of 's' subshell. This block includes the elements of..
Introduction - The long form of the periodic table is based upon the filling of a particular shell and has been accordingly divided into four blocks i.e. 's', 'p', 'd' and 'f' blocks. The 's' block elements involve the filling of 's' subshell. This block includes the elements of..Inner transition elements
The 'f' block elements are called inner transition elements. There are two series of 'f' block elements. These are the '4f' and '5f' series called Lanthanides and Actinides. The general outer electronic configuration of 'f' block elements is, (n - ..
Elements, Compounds and Mixtures
Elements, Compounds and Mixtures - According to the chemical classification of matter there are two main categories: Pure substances Mixtur..
Elements, Compounds and Mixtures - According to the chemical classification of matter there are two main categories: Pure substances Mixtur..Second Row Elements
In lithium (Z =3), the third electron goes to the next 2s orbital. In Beryllium (Z = 4), the fourth electron fills 2s orbital and in boron (Z = 5), the next electron goes to the next available 2p orbital. In carbon, the sixth electron is also to go into the 2p orbital as 2p subshell..
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