Class 9

Chemistry Class 9 Chapter 3 Important Question Answers

Chemistry Class 9 Chapter 3 Important Question Answers 9th Class Chemistry Periodic Table and Periodicity of Properties Q: How do you find the Group number of the periodic table elements? Trick to find Periodic Table Elements Group number Group Number = Number of valence electron Q: What is the electron arrangement of an element with …

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9th Class Chemistry Chapter 1 Important Short Questions 2023

Class 9 Chemistry 1st Chapter Important Short Questions What do moles mean in chemistry? In chemistry, a mole, sometimes spelled mol, is a standard scientific unit for measuring huge amounts of very small entities like atoms, molecules, and other defined particles. or A mole is the mass of a substance that contains 6.023 x 1023 particles …

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Chemistry slo fbise Class 9 Chapter 2 Important Questions 2023

Chemistry Class 9 Chapter 2 Structure of Atoms Important Question SLO Based Federal Board Chemistry slo fbise Class 9 Important Question/Answers Q. What were the observations of Rutherford’s experiment? Answer: Rutherford atomic model Diagram Rutherford’s Gold Foil Experiment Rutherford scattering experiment conclusion Q. What does Rutherford’s model explain? Ans. It explains that an atom is …

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Trick to determine the Period of the periodic table elements

Trick to determine the Period of the periodic table elements You can determine an element’s period number if you are provided its atomic number. For Example: A substance with the atomic number 6 The atomic number 6 substance is a carbon (C) and its electron configuration is 1s22s22p2. Check out !! Chemistry Class 9 Chapter …

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Atomic number of an element is 6 .Write down the electronic configuration of that element.

Atomic number of an element is 6 . Write down the electronic configuration of that element. The electronic configuration of the element atomic number (Z ) = 6 is Carbon (C). With a total of six electrons, carbon is the sixth element. The first two electrons will be placed in the 1s orbital when writing …

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How do to determine the periodic table elements Group?

Determine the Group of the Periodic Table Elements Trick to find Periodic Table Elements Group number Group Number = Number of valence electrons We must understand a few guidelines to determine the group: (number of valence electrons + 10).for groups.Example: S(16) – 2,8,6Group = no. of valence electrons+ 10 = 6+ 10 = 16 3. …

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What is periodic table in Simple Words?

What is Periodic Table in Simple Words? ANSWER Periodic Table A periodic table is a table in which the elements are arranged according to their rising atomic number and recurrent chemical characteristics. They are arranged in a tabular format with rows denoting periods and columns denoting groups. Periods In the periodic table, the horizontal rows …

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