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An Element Has an Atomic Number of 11 and Its Mass Number is 23. What is the Arrangement of Electrons in the Shells? State Nuclear Composition of an Atom of the Element. - Science

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An element has an atomic number of 11 and its mass number is 23. What is the arrangement of electrons in the shells? State nuclear composition of an atom of the element.

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Given: Atomic no. = 11
Mass no. = 23,
Electronic configuration – (2, 8, 1)

2 8 1

Nuclear composition of an atom of the element is – 11 protons and 12 neutrons.

Concept: Atoms and Molecules Numericals
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Lakhmir Singh Class 9 Chemistry - Science Part 2
Chapter 4 Structure of the Atom
Long Answer type Questions | Q 58.2 | Page 193
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