Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • Solve! The elements X, Y, Z and J have the indicated electron configurations starting with the innermostshell. The most metallic element is:

The elements X, Y, Z and J have the indicated electron configurations starting with the innermost shell. The most metallic element is:

  • Option 1)

    X = 2,8,3

  • Option 2)

    Y=2,8,8

  • Option 3)

    Z= 2, 8, 8, 1

  • Option 4)

    J = 2, 8, 8, 7

 

Answers (2)

best_answer

As we learned in concept

Metals -

–  Form metallic bonds.

–  78% of all known elements.

–  good conductor of heat & electricity.

–  Malleable and ductile.

-

 

 When we look at electronic config of these elements, we find that Y is a noble gas and J is a halogen (non metal). Between X to Z, Zis an alkali metal an also it is lower down the group than X and metallic character increases down the group. Also, Z has to lose just one electron for noble gas config whereas X has to lose 3 which is harder.


Option 1)

X = 2,8,3

This option is incorrect.

Option 2)

Y=2,8,8

This option is incorrect.

Option 3)

Z= 2, 8, 8, 1

This option is correct.

Option 4)

J = 2, 8, 8, 7

This option is incorrect.

Posted by

divya.saini

View full answer

Option 3

 

Posted by

Nikita bura

View full answer

Similar Questions

Latest Question