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Question 6 - MCQs from (Past Year Papers & NCERT Exemplar) - Chapter 5 Class 10 - Periodic Classification of Elements

Last updated at May 29, 2023 by

Where would you locate the element with electronic configuration 2, 8 in the Modern Periodic Table?

(a) Group 8

(b) Group 2

(c) Group 18

(d) Group 10

 

Answer

Electronic configuration: 2,8

  • This element has a completely filled outermost shell which means its octet is complete . 
  • Elements whose octets are complete are called noble gas and they are placed in group 18 in the modern periodic table.

So, the given element is a noble gas and hence, it belongs to group 18.

Modern Periodic table-01 - Teachoo.jpg

Therefore, the correct option is (c) Group 18

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