Question

First: Identify the element from clue 16 ---- Period 6, Group 1. hint number 55 on the table(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)

Answer 1

For the first part of your request:

1. The element located in Period 6, Group 1 is Francium, with an atomic number of 87.

Now for the second part:

2. The clue refers to "crossing a divide" and landing back on "solid ground." The hint suggests moving to the next element in the periodic table, which may refer to an element that is a solid at room temperature and has silvery-white properties.

   If we consider a common silvery-white metal with an average atomic mass of 178.5 amu, that would point to Tantalum (Ta), which has the atomic number 73.

3. Now, carrying out the instruction to "add 7 protons" to Tantalum (Ta):

   • Tantalum has an atomic number of 73.
   • Adding 7 protons gives us 80.

4. The element with atomic number 80 is Mercury (Hg).

To summarize the final steps for this part:

• I identified Tantalum (73) based on the clues provided regarding the properties of a silvery-white metal with an average mass.
• I then added 7 to its atomic number (73 + 7 = 80) to find Mercury (Hg).

Final Answers:

1. Francium (87)
2. Mercury (Hg, 80)