Noble Gases (Group 18) Elements Group 18 Elements Group 18 consists of six elements- helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). All these are…

Chlorine its Properties and Oxoacids of Chlorine Chlorine (Cl2) (1) Preparation: It can be prepared by any one of the following methods: (i) By heating manganese dioxide with concentrated hydrochloric acid. MnO2 + 4HCl → MnCl2 + Cl2 +…

  Group 17 Elements and Properties Group 17 Elements Group 17 includes Fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). They are collectively known as the halogens (Greek…

Sulphur its Compounds and Properties Sulphur (S): Sulphur is the 2nd element of the oxygen family. Sulphur forms a large number of allotropes. Among these Yellow Rhombic (α-Sulphur) and Monoclinic (β -Sulphur) forms are the…

  Group 16 Elements and Properties of Oxygen General Properties: (i) Ionisation Enthalpy: Ionisation enthalpy of these elements decreases down the group. It is due to an increase in size.…

  Passage Based Questions Chemistry Class XI 1. Read the passage and answer the questions that follow: The attractive force which holds the two atoms together is called a chemical…

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  Organic Chemistry Distinguish Tests Distinguish between 1. (C2H5)2​NH and (CH3)3​NH i). Add HNO2​. (C2H5)2​NH will form a yellow oily compound, whereas (CH3)3​NH will form salt soluble in water. (C2H5)2​NH​…

  Organic Chemistry Find the Compound Type Questions Que 1. An organic compound (A) (C8H16O2) was hydrolysed with dilute sulphuric acid to give carboxylic acid (B) and alcohol (C). Oxidation…

Case-Based Questions Chemistry Solid State                                 Passage – 1 Read the given passage and answer the…