NSTSE · Chemistry

Structure of the Atom

Sub-atomic particles, atomic models, electron configuration, isotopes.

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  • Q1 · Structure of the Atom · EASY

    An element X has atomic number 14. How many electrons are present in the outermost shell (valence shell) of element X?

  • Q2 · Structure of the Atom · MEDIUM

    An ion of element Y carries a charge of +2 and has 10 electrons. What is the atomic number of element Y?

  • Q3 · Structure of the Atom · MEDIUM

    An element X has atomic number 17. After gaining one electron to form an ion, how many electrons will be present in the outermost shell of the ion?

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