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Atoms of the same element having same at...

Atoms of the same element having same atomic number but different mass number are called

A

isotopes

B

isotopes

C

isotones

D

isotones

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The IUPAC name of the element having atomic number 150 is_____.

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Knowledge Check

  • The N orbit of an atom of an element having atomic number 20 contains 2 electrons. The number of electrons in its K, L and M orbits are respectively :

    A
    2, 6, 10
    B
    2, 8, 8
    C
    2, 2, 14
    D
    2, 4, 12

  • Because of lanthanide contraction, which of the following pairs of elements have nearly same atomic radii (Number in the parenthesis are atomic numbers)-

    A
    `Zr(40) and Hf(72)`
    B
    `Zr(40) and Ta(73)`
    C
    `Ti (22) and Zr(40)`
    D
    `Zr(40) and Nb(41)`

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    The wavelength of the K_(alpha) line of X-ray of an element having atomic number Z=11 is lambda . For which atomic number will the wavelength of that line be 4lambda ?

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