What radioactive element is used to diagnose medical conditions of the heart and arteries?
A) cobalt-60
B) thallium-201
C) radium-226
D) radon-222
E) thorium-234
Question 2
Which of the following complexes has a coordination number of 6?
A) Co(en)2Cl2+
B) Pt(NH3)2Cl2
C) Cu(NH3)42+
D) Ag(NH3)2+
E) None of these complexes has coordination number 6.
Question 3
Molecular compounds of low molecular weight tend to be gases at room temperature. Which of the following is most likely not a gas at room temperature?
A) KBr
B) F2
C) HCN
D) SO2
E) CH4