WebSolution. Before the Discovery of Neutron the atomic mass of the elements was found to be double or more than double of the number of protons. Since, the mass of an electron is negligible, It was ambiguous about where the rest of the mass is coming from. For example, if we consider the Carbon atom mass number of Carbon is 12 but the number of ... WebNCERT Solutions For Class 9 Science Chapter 4 Structure Of The Atom - BYJUS (i) An atom contains a positively charged sphere in which the negatively charged electrons are implanted. (ii) Electrons and protons are equal in magnitude; hence, an atom, on the whole, is electrically neutral. 2.
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WebApr 10, 2024 · Find all the NEET Chemistry important questions from the chapter Structure of Atom With solutions to perform better in the exam here. These important questions are prepared by our academic experts based on the syllabus guidelines prescribed by MCI. Download the NEET Chemistry - Structure of ATOM important questions PDF for free to … WebClass 9 Structure of the Atom MCQs 1. Atomic number (Z) is equal to —-----(a) Number of protons in the nucleus of an atom. (b) Number of electrons in a neutral atom (c) Both (a) … crook \u0026 marker single can
What problem of Atomic structure was solved by the discovery of …
WebDr. Matiar Howlader, ENGINEER 3N03, 2024 The atom is the smallest particle of an element that retains its characteristics. It consists of a central nucleus surrounded by orbiting electrons (-). The nucleus consists of protons (+) and neutrons (neutral). The atom is electrically neutral, i.e. number of electrons = number of protons = atomic number. … WebStructure of Atom Chemistry Practice questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, NCERT Exemplar Questions and PDF Questions with answers, solutions, explanations, NCERT reference and difficulty level ... Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via ... WebAnswer is (b) 10. Explanation: Mass number (A) of the atom = 27. Number of the neutron in the atom =14. Number of Electrons=Mass number-Number of neutrons=27-14. Number of electrons= 13. Since ions of the element have 3 positive charges number of the electron in the ion is 13-3 which equal 10. Hence the answer is 10. buffy jonathan