Multiple Choice
Choose the INCORRECT statement.
A) Zinc is poisonous in trace amounts.
B) ZnO,CdS and HgS are used as artist's pigments.
C) The band gap is the energy difference between the conduction band and the valence band.
D) The color of Zn,Cd,and Hg compounds depends on the width of the band gap.
E) One proposed mechanism of mercury poisoning is that mercury compounds react with sulfur in enzymes.
Correct Answer:

Verified
Correct Answer:
Verified
Q80: Which of the following forms a colorless
Q81: Pig iron comes from the blast furnace.
Q82: How many d electrons are there in
Q83: MnO<sub>4</sub><sup>-</sup>(aq)produces what manganese-containing species when used as
Q84: Iron,cobalt,and nickel form the iron triad.
Q86: Which is most probably the ground state
Q87: For the reaction<br>2 Mg(s)+ O<sub>2</sub>(g)→ 2 MgO(s)<br>a
Q88: A mercury alloy is called an amalgam.
Q89: Which element displays ferromagnetism?<br>A)Co<br>B)Cu<br>C)Ti<br>D)Cr<br>E)V
Q90: The paramagnetism of transition element compounds is