1. In the photoelectric effect, the energies of the ejected electrons A) are pro

Question

1. In the photoelectric effect, the energies of the ejected electrons

A) are proportional to the speed of light. B) are proportional to the frequency of light.

C) are proportional to the intensity of light. D) vary randomly.

2. If an element of atomic number 15 has an isotope of mass number 32

A) the number of neutrons in the nucleus is 17.

B) the number of protons in the nucleus is 17.

C) the number of nucleons in the nucleus is 15.

D) the number of protons in the nucleus is 32.

E) the number of neutrons in the nucleus is 15.

3. What is the momentum of a 600. nm photon?

A) 2.07 N-s

B) 2.07 kN-m

C) 2.07 KeV/c

D) 2.07 MeV/c

E) 2.07 eV/c

4. Which isotopes are radioactive?

A) odd numbered

B) some

C) even numbered

D) none

E) all

5. In a multielectron atom, which of the following levels is just above the 6s level?

A) 4f B) 6p C) 4d D) 7s E) 5p

6. The 5d subshell can contain how many electrons when filled?

A) 10 B) 4 C) 21 D) 14 E) 7

7. How many protons are there in the carbon-14 nucleus?

A) 14 B) 1 C) 8 D) 6 E) none

8. The 4d subshell field can contain how many electrons?

A) 7 B) 2 C) 10 D) 14 E) 4

please show work or explain.

Explanation / Answer

1. . D) vary randomly.


2.
B) the number of protons in the nucleus is 17.



3.
D) 2.07 MeV/c




4.
C) even numbered



5. E) 5p


6. C) 21


7.

A) 14


8.
A) 7

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