CARBON AND ITS COMPOUNDS Carbon plays a very important role…
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LATEST ARTICLES
Question 2.7: Calculate the wavelength frequency and wave number of a light wave whose period is 2.0 × 10–10 s. https://www.youtube.com/watch?v=G4rzkF41-58 Answer 2.7: Frequency (ν) of light = 1/Period Frequency (ν) = 1/2.0 × 10–10 s = 5…
Class 11 Chemistry Chapter 2 Question 2.1 https://www.youtube.com/watch?v=_lNTTItFsbg&t=32s Question 2.1: (i) Calculate the number of electrons which will together weigh one gram. (ii) Calculate the mass and charge of one mole of electrons. Ans 2.1: (i) Mass of…
https://www.youtube.com/watch?v=wPSp-xSYWsw Question 2.4: Write the complete symbol for the atom with the given atomic number (Z) and atomic mass (A) (i) Z = 17, A = 35 (ii) Z = 92, A = 233 (iii) Z = 4,…
https://www.youtube.com/watch?v=6-di0ujG_Ew Question 2.3: How many neutrons and protons are there in the following nuclei? 136C, 168O, 2412Mg, 5626Fe, 8838Sr Ans 2.3: 136C Atomic mass = 13 Atomic number = Number of protons = 6 Number of neutrons…