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The electronic configurations of three e...

 The electronic configurations of three elements X, Y and Z are X 2, 8, Y-2, 8, 7 and Z- 2, 8, 2. Which of the following is correct?

A

X is a metal

B

Y is a metal

C

Z is a non-metal

D

Y is a non-metal and Z is a metal

Text Solution

Verified by Experts

The correct Answer is:
D
Y is a non-metal because it requires one complete its octate. Z is a has complete octate.
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Knowledge Check

  • The electronic configurations of three elements X, Y and Z are X—2,8, Y—2,8, 7 and 2-2,8, 2. Which of the following is correct ?

    A
    X is a metal.
    B
    Y is a metal.
    C
    Z is a non-metal.
    D
    Y is a non-metal and Z is a metal.

  • The electronic configuration of three elements X, Y and Z are X - 2, 8, Y - 2, 8, 6 and Z - 2, 8, 1. Which of the following is correct ?

    A
    X is a metal
    B
    Y is a metal
    C
    Z is a non-metal
    D
    Y is a non-metal and Z is a metal.

  • The electronic configuration of three elements X, Y and Z are: X:2 Y:2,8,7 Z:2,8,2 Which of the following is correct regarding these elements?

    A
    `X` is a metal
    B
    `Y` is a metal
    C
    `Z` is a non-metal
    D
    `Y` is a non-metal and `Z` is a metal

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