Which one of the following forms of radiation can penetrate the deepest into body tissue?
A) alpha
B) beta
C) gamma
D) positron
E) proton
Question 2
How many d electrons are associated with the metal ion in Cr(NH3)3+?
A) 1
B) 2
C) 3
D) 4
E) 5
Question 3
Which of the following facts does not fit Dalton's atomic theory?
A. All atoms of oxygen are different from all atoms of nitrogen.
B. Atoms are not destroyed in chemical reactions.
C. Combinations of atoms rearrange during a chemical reaction.
D. All oxygen atoms have the same number of protons but may have different atomic
masses.