Question
First: Identify the element from clue 16 ---- Period 6, Group 1. (Name and Atomic number, please 2 points) Second: you must "cross a divide". When you land back on "solid ground" there is a silvery white metal with an average mass of 178.5 amu. From there --- add 7 protons! Identify the element and describe the final steps you used to solve this last clue! (4 points)
Answers
GPT-4o mini
First: The element in Period 6, Group 1 is **Francium** with the atomic number **87**.
Second: The phrase "cross a divide" typically refers to moving from one section of the periodic table to another. In this context, "solid ground" could refer to a solid element, and "a silvery white metal with an average mass of 178.5 amu" points to **Tantalum**, which has an atomic mass of approximately 180.95 amu and is indeed a silvery-white metal.
Next, to "add 7 protons," you take the atomic number of Tantalum, which is **73**, and add 7:
73 + 7 = 80.
The element with atomic number 80 is **Mercury** (Hg).
In summary, starting with Francium (atomic number 87), identifying Tantalum (approximately 178.5 amu), and then adding 7 protons gives you Mercury (atomic number 80).
Second: The phrase "cross a divide" typically refers to moving from one section of the periodic table to another. In this context, "solid ground" could refer to a solid element, and "a silvery white metal with an average mass of 178.5 amu" points to **Tantalum**, which has an atomic mass of approximately 180.95 amu and is indeed a silvery-white metal.
Next, to "add 7 protons," you take the atomic number of Tantalum, which is **73**, and add 7:
73 + 7 = 80.
The element with atomic number 80 is **Mercury** (Hg).
In summary, starting with Francium (atomic number 87), identifying Tantalum (approximately 178.5 amu), and then adding 7 protons gives you Mercury (atomic number 80).