क्वांटम संख्या,इलेक्ट्रॉनिक विन्यास || Structure of Atom Ch 2 Lec 4 | 11th CHEMISTRY | Poonam Ma'am

Which of the following statements are correct? 1. Starch forms helical secondary structures while cellulose doesn't have complex helices. 2. Palmitic acid has 14- CH_2 groups in its structure. 3. Maltose is a disaccharide made up of glucose and fructose. 4. The number of carbon and oxygen atoms present in glucose is less than those present in ribose.

12 PM Special Class | Class 11 - STRUCTURE OF ATOM || BOHR MODEL By Yakshu Ma'am

Which the list shown below, the correct pair of structures of alanine in pH ranges 2-4 and 9-11 is I. H_(3)N^(+)CH(CH_(3))CO_(2)H II. H_(2)NCH(CH_(3))CO_(2)^(-) III. H_(3)N^(+)CH(CH_(3))CO_(2)^(-) IV. H_(2)NCH(CH_(3))CO_(2)H

Compare the shapes of p-orbital and sp-hybrid orbital Which on has a greater directional orientation ? (b) What are the hybridisation state of each C-atom in the following molecules ? (i) Benzene (ii) CH_(3) CH_(2) CH_(2) CH_(3) (iii) HC -= CH (iv) CH_(2) =CH- CH= CH_(2) (v) CH_(3) - CH =CH - CH_(3) (c ) What hybidisation is expected on the central atom of each of the following molecules ? (d) (i) Which molecule AX_(3),AX_(4),AX_(5),AX_(6) is likely to have to a trigonal bipyramid structure (ii) If the central atom A has no lone pairs, what type of hybridisation will it have .

In chemistry, 'mole' is an essential tool for the chemical calculations. It is a basic SI unit adopted by the 14^(th) general conference on weights and measurements in 1971. A mole contains as many elementary particles as the number of atoms present in 12 g of ""^(12)C . 1 mole of a gas at STP occupies 22.4 litre volume. Molar volume of solids and liquids is not definite. Molar mass of a substance is also called gram-atomic mass or gram molecular mass. The virtual meaning of mole is plenty, heap or the collection of large numbers. 1 mole of a substance contains 6.022 xx 10^(23) elementary particles like atom or molecule. Atomic mass unit (amu) is the unit of atomic mass, e.g., atomic mass of single carbon is 12 amu. How many atoms are present in 49 g of H_(2)SO_(4)?