A) Which of the following elements is not a metalloid?
A. Si
B. Ge
C. As
D. Ar
Answer:D
A) Which of the following elements is not a metalloid?
A. Si B. Ge C. As D. Ar
Explanation: The metalloids are B, Si. Ge, As, Te and Po. Ar (Argon) is a noble gas having atomic number 18.