Jyoti Bashyal 
Sulfur is multivalent non-metal, abundant, and odorless. Pure sulfur is a tasteless, odorless, brittle, pale yellow solid that is a poor conductor of electricity and insoluble in water. It can be found in nature as a pure element or as … Read more
a) Which of the following models does not correspond to the Thomson Model of Atom? plum pudding model watermelon model raisin pudding model nuclear model b) Rutherford in his atomic model could not explain which of the following behaviour? Electrons … Read more
Nitrogen is a nonmetal in Periodic Table Group V. It exists in the atmosphere as a gaseous element composed of diatomic molecules. Nitrogen makes up approximately 78 percent of the atmosphere by volume, making it the most important source of … Read more
The element Nitrogen belongs to Periodic Table Group 15. It is a nonmetallic element that accounts for approximately 78 percent of the Earth’s atmosphere. It exists in the form of diatomic molecules, N2. The gas is inert due to a … Read more
The element Chlorine is the halogen located in group 17 in the periodic table. Chlorine is the chemical element that constitutes about 0.017 percent of the earth’s crust. Chlorine is a toxic, corrosive gas that is greenish-yellow and irritating to … Read more
The modern periodic table, created by Dmitri Mendeleev, listed elements in ascending atomic mass order. Groups of elements with similar physical and chemical properties constitute the columns. The elements in Group 2 have atoms whose electronic configurations end with two electrons … Read more
Polar Molecules Definition A polar molecule is a chemical substance in which the distribution of electrons between the atoms involved is uneven, resulting in a dipole moment. Image Source: University of Hawaiʻi at Mānoa. Nonpolar Molecules Definition Nonpolar molecules are … Read more
Saturated Hydrocarbons Definition Saturated hydrocarbons are the simplest forms of hydrocarbons consisting entirely of single bonds that remain saturated with hydrogen atoms. Unsaturated Hydrocarbons Definition Unsaturated hydrocarbons are the group of hydrocarbons composed of double or triple bonds between the … Read more
Reducing Sugar Definition Reducing sugar is a type of sugar that consists of a free aldehyde group or a free ketone group, allowing the molecule to act as a reducing agent. All monosaccharides are reducing sugars, and so are some … Read more