Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart2h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

2. Cell Chemistry & Cell Components

Atoms- Smallest Unit of Matter

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Atoms- Smallest Unit of Matter

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Multiple Choice

A neon atom (Ne) is unreactive for which of the following reasons?
a) It has 7 valence electrons.
b) It has 8 valence electrons.
c) Its valence shell is full of electrons.
d) It has 20 valence electrons.
e) b and c only.

It has 7 valence electrons.

It has 8 valence electrons.

Its valence shell is full of electrons.

It has 20 valence electrons.

b and c only.

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Verified step by step guidance

Identify the atomic number of Neon from the periodic table image, which is 10. This indicates that a neutral Neon atom has 10 electrons.

Understand that Neon is a noble gas, which means it is located in Group 18 of the periodic table. Noble gases are known for their lack of reactivity due to their full valence electron shells.

Determine the electron configuration of Neon. With 10 electrons, Neon fills the first energy level with 2 electrons and the second energy level with 8 electrons, resulting in a configuration of 1s² 2s² 2p⁶.

Recognize that the second energy level is the valence shell for Neon, and it is full with 8 electrons. This full valence shell is what makes Neon unreactive.

Conclude that the correct reasons for Neon being unreactive are that it has 8 valence electrons and its valence shell is full of electrons, corresponding to options b and c.