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Note: I only wish I had a teacher that gave me homework like this.

My teacher gave me rather weird homework... what does it mean? I am doing it here.

5.11G, 2
5.6G, 2
6.13G, 1
2.16G, 1
3.15G, 1
6.11G, 2
4.12G, 1
5.4G, 1
6.13G, 2
4.4G, 2
7.12G, 2
4.13G, 1

Hint 1:

G stands for something.

Edit/Hint 2:

Added the knowledge tag(should've done this before).

Hint 3:

5.11 is not one number - it's two!

Hint 4:

Based on Hint 3, "." stands for something. What, you ask? Just say its name out loud!

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  • 8
    $\begingroup$ Flagged as a homework question! :-P $\endgroup$ – Rand al'Thor Dec 6 '17 at 2:15
  • 4
    $\begingroup$ It seems the homework is completed. You are a good boy/girl. There is no question to answer. Provide a question to solve. $\endgroup$ – Mea Culpa Nay Dec 6 '17 at 5:47
  • $\begingroup$ It looks like gaming keyboard keys $\endgroup$ – rudra Dec 6 '17 at 5:52
  • $\begingroup$ @MeaCulpaNay It is tagged as an enigmatic puzzle. So the teacher has given the student a piece of paper with only what OP wrote on it and told the student to complete it. Part of the fun is figuring out what you are supposed to do $\endgroup$ – Jesse Dec 7 '17 at 4:47
  • $\begingroup$ Is your homework complete? Is there more to do to complete the homework? $\endgroup$ – Dr t Dec 8 '17 at 21:01
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Your homework is to ...

... go to puzzling.

Each line of the message ...

... describes a letter via an element of the periodic table. The notation p . g G, c refers to the element in group g of period p. The index c tells us which letter to take from the chemical symbol.

For example, the first line 5.11G, 2 refers to silver, which is in group 5 and period 11. The answer is the second letter of the chemical symbol, Ag. Here's the full message:

    5.11G, 2: Ag  G          3.15G, 1: P   P         6.13G, 2: Tl  L
     5.6G, 2: Mo  O          6.11G, 2: Au  U          4.4G, 2: Ti  I
    6.13G, 1: Tl  T          4.12G, 1: Zn  Z         7.12G, 2: Cn  N
    2.16G, 1: O   O           5.4G, 1: Zr  Z         4.13G, 1: Ga  G

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  • $\begingroup$ Got it! :) Hence the title "Just doing my homework". Curious: how many hints did you use? Would the puzzle have been too hard without them? $\endgroup$ – Quintec Dec 9 '17 at 16:40
  • $\begingroup$ Ah, so it was chemistry homework. I didn't have a clue until I read the last hint, which reminded me of this question about "Dotted words". $\endgroup$ – M Oehm Dec 9 '17 at 16:49
  • $\begingroup$ Ah, ok. And no, it wasn’t homework of any kind, I made it up :) $\endgroup$ – Quintec Dec 9 '17 at 19:28
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I will take a stab at this although I am not sure that what I am thinking is correct...

You have apparently been assigned to find

The names of stars, or the constellations with stars having the Magnitudes given in the Star Class range G where there are a specific number of those stars on a particular photographic plate...

The reason that 5.11 is actually two numbers is

5.11 may actually be the PRODUCT of two or more numbers which results in apparent magnitude

I googled this idea and found the following link:

https://books.google.com/books?id=M1JAAQAAMAAJ&pg=PA92&lpg=PA92&dq=5.13G,+2&source=bl&ots=ekGRmdL6N9&sig=jn2Aue_5Y5eghLeATwVdVU8MPlo&hl=en&sa=X&ved=0ahUKEwii-eLjqfvXAhVC8IMKHYC0DjcQ6AEIVTAJ#v=onepage&q=5.13G%2C%202&f=false

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  • $\begingroup$ Interesting idea! That's not it though. The answer is a message... $\endgroup$ – Quintec Dec 9 '17 at 0:13

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