Name: _______________________________________________ Date: __________ Period: _________
3
Chemical Foundations and the Periodic Table
(CHEMACTIVITY: Atoms, Ions, Isotopes)
How does a knowledge of atomic structure serve as a foundation for the science of chemistry?
2 – Mastered
1 – Not Yet Mastered
0 - Incomplete
1. How many protons and electrons are
present in a vanadium atom?
9. What is the name of the element that has
atoms that contain 82 protons?
2. How many protons and electrons are
present in a nitrogen atom?
10. What is the name of the element that has
atoms that contain 92 protons?
3. How many protons and electrons are
present in an argon atom?
11. Write the nuclear notation for the ion with 12
protons, 12 neutrons, and 10 electrons.
4. How many protons and electrons are
present in a potassium atom?
12. Write the nuclear notation for the ion with 74
protons, 110 neutrons, and 68 electrons.
5. How many protons and electrons are
present in a platinum atom?
13. Write the nuclear notation for the ion with 95
protons, 148 neutrons, and 89 electrons.
6. What is the name of the element that has
atoms that contain 5 protons?
14. Write the nuclear notation for the ion with 33
protons, 43 neutrons, and 36 electrons.
7. What is the name of the element that has
atoms that contain 17 protons?
15. Write the nuclear notation for the ion with 29
protons, 35 neutrons, and 27 electrons.
8. What is the name of the element that has
atoms that contain 25 protons?
16. How many protons, neutrons, and electrons
are present in the 59
Ni2+ ion?
28
17. How many protons, neutrons, and electrons
91
are present in the 40
Zr 4+ ion?
26. Which has more neutrons:
18. How many protons, neutrons, and electrons
are present in the 140
Ce3+ ion?
58
27. Which has fewer electrons:
19. How many protons, neutrons, and electrons
are present in the 79
Se2- ion?
34
28. Which of the following has the same number
of electrons as 39
K1+
19
140
58
27
13
40
20
20. How many protons, neutrons, and electrons
are present in the 45
Sc 3+ ion?
21
22. How many protons, neutrons, and electrons
are present in the 60
Ni atom?
28
23. How many protons, neutrons, and electrons
are present in the 199 F atom?
24. How many protons, neutrons, and electrons
are present in the 96
Mo atom?
42
25. How many protons, neutrons, and electrons
are present in the 185
W atom?
74
Al3+ or
Ca2+ or
132
54
35
17
Xe
Cl1-
80
35
Br 1-
29. How many fewer neutrons are in
in
21. How many protons, neutrons, and electrons
are present in the 136 C4- ion?
Ce3+ or
132
54
39
19
K1+ than
Xe ?
30. What is the atomic mass number of an atom
with 14 protons, 15 neutrons, and 17
electrons?
31. How many electrons have been gained in an
32 2S ion?
16
32. How many electrons have been lost in an
88
Sr 2+ ion?
38
33. For an atom of oxygen to be neutral it must
have ___ protons and ____ electrons.
34. For an ion of nitrogen to have a charge of 3-,
it must have ____ protons and ___
electrons.