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NTA Abhyas NEET2020ChemistryClassification of Elements and Periodicity in PropertiesPractice

The valence shell electronic configuration of an element is ns 2 np 5 . The element will belong to the group of -

Options

  1. AAlkali metals
  2. BInert metals
  3. CNoble gases
  4. DHalogens

Correct answer

D. Halogens

Step-by-step solution

H a l o g e n F a m i l y ⇒ n s 2 n p 5 All halogens contain seven electrons in their outermost shell. All other shells are completely filled. These elements require only one electron to complete their octet.

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