The quantum number "l" for an electron in an atom denotes:
a. the number of electrons in the orbit
b. its total energy
c. the shape of its orbital
d. its spin
2. Metals serve as the _______________ in chemical reactions.
a. catalyst
b. reducing agent
c. oxidizing agent
d. anions
3. Write the ground state electron configuration for Ni+3.
a. [Ar]
b. [Ar]3d7
c. [Ar]4s23d8
d. [Ar]4s23d5
4. Which of the following elements has the lowest first ionization energy?
a. N
b. F
c. Li
d. Be
5. What is the frequency of light having a wavelength of 523nm?
a. 5.74 x 1014Hz
b. 6.58 x 1014Hz
c. 5.74 x 105Hz
d. 6.58 x 105Hz
6. Which of the following electron configuration pairs would represent similar chemical properties of their atoms:
a. 1s1 and [Ar]
b. [Ar]4s1 and [Ar]4s23d6
c. 1s22s22p1 and 1s22s22p63s23p2
d. [Ne]3s1 and 1s22s22p4
7. Calculate the wavelength (in nanometers) of a photon emitted by a hydrogen atom when its electron drops from the n=6 to the n=2 state.
a. 8.13x105nm
b. 4.11x102nm
c. 1.23x103nm
d. 4.11x10-23nm
8. Indicate which of the following sets of quantum numbers in an atom is unacceptable:
a. (4,4,-2, +1/2)
b. (3,0,0,+1/2)
c. (1,0,0,-1/2)
d. (2,1,1, +1/2)
9. The magnetic quantum number in the Schrodinger Wave Function determines:
a. the spin of the electron
b. the shape of the orbital
c. the distance of the electron from the nucleus
d. the orientation of the orbital
10. Specify the group of the periodic table in which the following element is found: [Ne]3s23p1.
a. 3A
b. 2A
c. Transition Metal
d. 1A
11. Which of the following atoms has the smallest atomic radius?
a. Mg
b. Sr
c. Be
d. Ca
12. Write the ground state electron configuration for Iron.
a. [Kr]5s24d105p5
b. 1s22s22p5
c. 1s22s22p63s23p64s23d6
d. [Rn]7s1