1) Which set of values is not possible?
| Set | Mass Number | Atomic Number | Number of protons | Number of neutrons | Element |
|---|---|---|---|---|---|
| A | 40 |
20 |
20 |
20 |
Calcium |
| B | 58 |
28 |
28 |
28 |
Nickel |
| C | 82 |
36 |
36 |
46 |
Krypton |
(a) Set A
(b) Set B
(c) Set C
2) Which two subatomic particles have calculated mass-to-charge ratios?
(a) electrons and neutrons
(b) protons and electrons
(c) neutrons and protons
3) Give the number of electrons, protons, and neutrons in an atom of 31P.
(a) 15 electrons, 15 protons, 1 neutron
(b) 15 electrons, 15 protons, 31 neutrons
(c) 15 electrons, 15 protons, 16 neutrons
(d) 15 electrons, 16 protons, 16 neutrons
(e) 15 electrons, 16 protons, 31 neutrons
4) Neutral atoms have the same number of which two subatomic particles?
(a) electrons and neutrons
(b) neutrons and protons
(c) protons and electrons
5) Which set of values is not possible?
| Set | Mass Number | Atomic Number | Number of protons | Number of neutrons | Element |
|---|---|---|---|---|---|
| A | 40 |
20 |
20 |
20 |
Zirconium |
| B | 58 |
28 |
28 |
30 |
Nickel |
| C | 82 |
36 |
36 |
46 |
Krypton |
(a) Set A
(b) Set B
(c) Set C
6) Which two subatomic particles were discovered using cathode-ray tubes?
(a) protons and electrons
(b) protons and neutrons
(c) electrons and neutrons