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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

4. Atoms and Elements

Periodic Table: Representative Elements & Transition Metals

Introduction to Chemistry

4. Atoms and Elements

Periodic Table: Representative Elements & Transition Metals

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Multiple Choice

Which of the following is a representative element, found in the 3rd Period, that is also a pnictogen.

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Verified step by step guidance

Identify the term 'representative element': These are elements found in the s and p blocks of the periodic table, excluding the transition metals.

Understand the term 'pnictogen': Pnictogens are elements in Group 15 of the periodic table, which includes nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), and bismuth (Bi).

Locate the 3rd Period on the periodic table: The 3rd Period includes elements with atomic numbers 11 to 18, which are Na, Mg, Al, Si, P, S, Cl, and Ar.

Determine which of the elements listed is a pnictogen: From the 3rd Period, phosphorus (P) is the only element that belongs to Group 15, making it a pnictogen.

Verify that phosphorus (P) is a representative element: Since phosphorus is in the p block of the periodic table, it is indeed a representative element.