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.

• For Polonium (Po), atomic number 84, it has 6 valence electrons. So, the symbol 'Po' is written with 6 dots around it.
• For Radon (Rn), atomic number 86, it is a noble - gas with 8 valence electrons. The symbol 'Rn' is written with 8 dots around it.
• For Strontium (Sr), atomic number 38, it has 2 valence electrons. The symbol 'Sr' is written with 2 dots around it.
• For Tennessine (Ts), atomic number 117, it has 7 valence electrons. The symbol 'Ts' is written with 7 dots around it.

Answer:

a) Po with 6 dots around it
b) Rn with 8 dots around it
c) Sr with 2 dots around it