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JEE Main201912 Jan 2019Morning ShiftChemistryClassification of Elements and Periodicity in PropertiesActual

The element with Z = 120 (not yet discovered) will be a/an

Options

  1. Atransition metal.
  2. Balkaline earth metal.
  3. Calkali metal.
  4. Dinner-transition metal.

Correct answer

B. alkaline earth metal.

Step-by-step solution

Og 118 8 s 2 is the configuration for Z = 120 . Since the differentiating electron is entering in the s - orbital, the element will belong to the s-block and the outermost s-orbital is having two electrons. Hence, It will belong to the alkaline earth metal group.

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