New Enroll for RBI, PFRDA & NABARD Intro Class! April 18 at 9:15 PM

    Question

    Which of the following has the lowest ionization

    enthalpy?
    A Sodium Correct Answer Incorrect Answer
    B Aluminium Correct Answer Incorrect Answer
    C Magnesium Correct Answer Incorrect Answer
    D Potassium Correct Answer Incorrect Answer

    Solution

    Ionization enthalpy is the energy required to remove the outermost electron from a neutral atom in the gaseous state. Among the given elements: Potassium has the largest atomic size and loosely held outermost electron due to being in the 4th period, making it the easiest to ionize. Hence, it has the lowest ionization enthalpy among the options.

    Practice Next