Final answer:
The given elements are Sodium (Na), Xenon (Xe), Iron (Fe), and Mercury (Hg). Additional elements based on specific criteria include Krypton (Kr), Strontium (Sr), Fluorine (F), and Tellurium (Te).
Step-by-step explanation:
The names and symbols of the elements as per the student's request are as follows:
Sodium is represented by the symbol Na.
Xenon is represented by the symbol Xe.
Iron is represented by the symbol Fe.
Mercury is represented by the symbol Hg.
Here are additional elements based on the criteria provided:
The noble gas in the same period as germanium is Krypton (Kr).
The alkaline earth metal in the same period as selenium is Strontium (Sr).
The halogen in the same period as lithium is Fluorine (F).
The chalcogen in the same period as cadmium is Tellurium (Te).