Question

part 2d 3 marks choose 3 of 4 (lesson 2b) draw the lewis dot diagrams of the following elements a) polonium b) radon c) strontium d) tennessine

Explanation:

Lewis - Dot diagrams represent the valence electrons of an element as dots around the symbol of the element. To draw them, first determine the number of valence electrons from the element's position in the periodic table.

• Polonium (Po) is in Group 16, so it has 6 valence electrons. The symbol 'Po' is written, and 6 dots are placed around it.
• Radon (Rn) is in Group 18, so it has 8 valence electrons. The symbol 'Rn' is written, and 8 dots are placed around it.
• Strontium (Sr) is in Group 2, so it has 2 valence electrons. The symbol 'Sr' is written, and 2 dots are placed around it.
• Tennessine (Ts) is in Group 17, so it has 7 valence electrons. The symbol 'Ts' is written, and 7 dots are placed around it.

Answer:

a) For Polonium (Po): Write 'Po' and place 6 dots around it.
b) For Radon (Rn): Write 'Rn' and place 8 dots around it.
c) For Strontium (Sr): Write 'Sr' and place 2 dots around it.
d) For Tennessine (Ts): Write 'Ts' and place 7 dots around it. (Choose any 3 of these 4 for your answer as per the question requirement)