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The positions of four elements K, L, M a...

The positions of four elements K, L, M and N in the periodic table are shown below:

Which of the following statements are correct?
I. K, L, M and N are metalloids
II. K is a metal while L, M and N are non-metals
III. Among these four elements, K is the smallest in size.
IV. K is a metal while L and M are metalloids and N is a non-metal.

A

II and III

B

I and III

C

III and IV

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B

B, Si, Ge and As are metalloids and among these B is the smallest in size
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Knowledge Check

  • A natural atom of an element has 2K,8L, 9M and 2N electrons .The atomic number of element is :

    A
    20
    B
    21
    C
    22
    D
    23

  • A natural atom of an element has 2K,8L, 9M and 2N electrons .The atomic number of element is : The valency of element is

    A
    `+2`
    B
    `+3`
    C
    `Both +2 and +3`
    D
    `-1`

  • A natural atom of an element has 2K,8L, 9M and 2N electrons .The atomic number of element is : The total number of s electons are

    A
    8
    B
    6
    C
    4
    D
    10

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