Fill in the nine gaps in this table. Element symbol B. Protons 6. Neutrons 10 Electrons 18 Mass number 11 40 Answer: First col.: 5, 6, 5; second col : E9 19 thind

Chemistry
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Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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(1.1)
EXERCISES
1.2 The Atomic Nucleus
7.
1. Fill in the nine gaps in this table.
Element symbol
B.
Protons
Neutrons
10
Electrons
18
Mass number
11
Answer: First col.: 5, 6, 5; second col.: F 9, 19; third col: Ar, 18, 22
2. Fill in the nine gaps in this table.
Element symbol
Ga
Protons
15
Neutrons
39
20
Electrons
17
Mass number
31
Oxygen (O) has three stable isotopes with consecutive mass
numbers. Write the complete nuclear symbol (with neutron
number) for each.
Answer: O,, O, 00
Show that the neutron number for the following nuclides
generally exceeds the atomic number for nuclei with atomic
numbers greater than 20: lithium-6, bromine-80, silicon-28,
titanium-48, fluorine-19, and platinum-179.
40
Transcribed Image Text:(1.1) EXERCISES 1.2 The Atomic Nucleus 7. 1. Fill in the nine gaps in this table. Element symbol B. Protons Neutrons 10 Electrons 18 Mass number 11 Answer: First col.: 5, 6, 5; second col.: F 9, 19; third col: Ar, 18, 22 2. Fill in the nine gaps in this table. Element symbol Ga Protons 15 Neutrons 39 20 Electrons 17 Mass number 31 Oxygen (O) has three stable isotopes with consecutive mass numbers. Write the complete nuclear symbol (with neutron number) for each. Answer: O,, O, 00 Show that the neutron number for the following nuclides generally exceeds the atomic number for nuclei with atomic numbers greater than 20: lithium-6, bromine-80, silicon-28, titanium-48, fluorine-19, and platinum-179. 40
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