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(a) Describe Bohr's model of the atom. H...

(a) Describe Bohr's model of the atom. How did Neils Bohr explain the stability of atom ?
(b) An element has an atomic number of 11 its mass number is 23. What is the arrangement of electrons in the shells ? State nuclear composition of an atom of the element.

Text Solution

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The correct Answer is:
(b) `underset("2, 8, 1")("K L M")` ; 11 protons and 12 neutrons
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Knowledge Check

  • The atomic number of an element is 35. What is the total number of electrons present in all the p-orbitals of the ground state atom of that element.

    A
    6
    B
    11
    C
    17
    D
    23

  • The atomic number of an element is 35. What is the total number of electrons present in all the p -orbitals of the ground state atom of that element?

    A
    6
    B
    11
    C
    17
    D
    23

  • The atomic number of an element is 11 and its mass number is 23. The respective number of elec­ trons, protons and neutrons in this atom will be

    A
    11, 11, 12
    B
    11,12, 11
    C
    12, 11, 11
    D
    23, 11,23

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    What will be the composition of the nucleus of the atom of an element with atomic number 19 and mass number 39?

    How many electrons are present in the M shell of an atom of an element with atomic number 23?

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