Chapter 4: Chemistry Chemical Bonding and Molecular Structure
1. Explain the formation of a chemical bond. Ans: A chemical bond is defined as an attractive force that holds the constituents (atoms, ions, etc.) together in a chemical species. Various theories have been suggested for the…
Chapter 3: Periodicity in Properties and Classification of Elements
1. What is the basic theme of organisation in the periodic table? Ans : The primary idea of the periodic table’s organisation is to organise elements into periods and groups based on their qualities. This arrangement simplifies…
Chapter 2: Structure of Atom
Question 1.(i) Calculate the number of electrons which will together weigh one gram.(ii) Calculate the mass and charge of one mole of electrons.Answer:(i) Mass of an electron = 9.1 × 10-28 g9.1 × 10-28 g is the mass of =…
How many seconds are there in 2 days?
A. 156900 s B. 172800 s C. 177800 s D. 160000 s Here we’re going to find out the answers using unit factor method or dimensional analysis, or sometime may refer as factor label method. As we…
