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  • Question 1
    4 / -1

    Which of the following pairs is isolelectronic?

  • Question 2
    4 / -1

    The common features among the species CN‒, CO and NO+ are

  • Question 3
    4 / -1

    The set representing the correct order of first ionization potential is

  • Question 4
    4 / -1

    Consider the following statements:
    I. The radius of an anion is larger than that of the parent atom
    II. The ionization energy generally increases with increasing atomic number in a period.
    III. The electronegativity of an element is the tendency of an isolated atom to attract an electron.
    Which of the above statements is/are correct ?

  • Question 5
    4 / -1

    The electronic configuration of elements A, B and C are [He]2s1, [Ne] 3s1 and [Ar] 4s1 respectively. Which one of the following order is correct for.IE1 (in kJ mol-1) of A, B and C ?

  • Question 6
    4 / -1

    Which of the following sets of atomic numbers belong to that of alkali metals?

  • Question 7
    4 / -1

    Element with atomic number 56 belongs to which block?

  • Question 8
    4 / -1

    Which of the following order is wrong ?

  • Question 9
    4 / -1

    Identify the least stable ion amongst the following

  • Question 10
    4 / -1

    According to the Periodic law of elements, the variation in properties of elements is related to their

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