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1. The Chemical World9m
- The Scientific Method
  9m
2. Measurement and Problem Solving2h 19m
3. Matter and Energy2h 15m
4. Atoms and Elements2h 33m
5. Molecules and Compounds1h 50m
6. Chemical Composition1h 23m
7. Chemical Reactions1h 43m
8. Quantities in Chemical Reactions1h 8m
9. Electrons in Atoms and the Periodic Table2h 32m
10. Chemical Bonding2h 10m
11 Gases2h 7m
12. Liquids, Solids, and Intermolecular Forces1h 11m
13. Solutions3h 1m
14. Acids and Bases2h 14m
15. Chemical Equilibrium1h 27m
16. Oxidation and Reduction1h 33m
17. Radioactivity and Nuclear Chemistry53m

5. Molecules and Compounds

Periodic Table: Elemental Forms (Simplified)

Introduction to Chemistry

5. Molecules and Compounds

Periodic Table: Elemental Forms (Simplified)

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Multiple Choice

Which of the following is a representative element that is not diatomic in the 4th period that is a metalloid?

Silicon

Tin

Gallium

Chlorine

Germanium

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Verified step by step guidance

Understand the term 'representative element': These are elements found in groups 1, 2, and 13-18 of the periodic table. They are also known as main group elements.

Identify the term 'diatomic': Diatomic molecules consist of two atoms. Common diatomic elements include hydrogen, nitrogen, oxygen, fluorine, chlorine, bromine, and iodine.

Locate the 4th period on the periodic table: The 4th period includes elements from potassium (K) to krypton (Kr).

Define 'metalloid': Metalloids have properties intermediate between metals and nonmetals. Common metalloids include boron, silicon, germanium, arsenic, antimony, and tellurium.

Identify Germanium: Germanium is a metalloid located in the 4th period of the periodic table. It is not diatomic and is a representative element, fitting all the criteria given in the problem.