Web17 feb. 2024 · Q.1. Number of protons, neutrons and electrons in the element 89X231 is(a) 89, 89, 242 (b) 89, 142, 89(c) 89, 71, 89 (d) 89, 231, 89 Answer (b) Number of p = number of e– = 89 and neutrons 231 – 89 = 142. Q.2. Atoms with same mass number but different atomic numbers are … Continue reading Chemistry MCQs for Class 11 Chapter 2 … WebL7 : Dihydrogen uses & properties, Physical & chemical - Hydrogen, Class 11. 319 Views Energy Conservation - PowerPoint Presentaion, Physics, Class XI. 305 Views …
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WebQuestion of Class 11-Hydrogen Economy : Hydrogen as fuel Hydrogen is another proposed alternative energy source. Some advantages of hydrogen are: (i) Hydrogen is aboundantly available in the combined form as water. (ii) Use of hydrogen as fuel provides pollution free atmosphere because its combina Web4 aug. 2024 · Here you can download Chemistry Class 11 & 12th All Subjects Handwritten Notes PDF for JEE & NEET. All PDFs are paid because notes are uploaded by students … charging cable macbook pro 2013
ATOMIC STRUCTURE HYDROGEN SPECTRUM CHEMISTRY CLASS -11th …
Web26 jan. 2024 · ppt on hydrogen for class XI th chemistry. 1. Hydrogen. 2. INTRODUCTION Hydrogen, chemical element that exists as a gas at room temperature. When hydrogen … Web25 feb. 2024 · Class 11 / JEE Exams / NEET Exams 0 Comments General Consideration In atomic form it consists of only one proton and one electron. In elemental form it exists as a diatomic (H2) molecule and is called dihydrogen. Hydrogen has similarity with alkali metals and halogens Chemistry Notes Download Physics Notes Download Biology Notes … Web29 okt. 2024 · These Hydrocarbons (Alkanes) MCQs (Class-11) And Answers will help you to prepare for any competitive exams like: NEET, AIIMS, JEE Mains, JEE Advance, IIT JEE, JIPMER and other Exams at all levels – you just have to practice regularly. charging cable hts code