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Can you name the element symbols which have the same two letters in opposite order?
Enter a symbol in the box below
Correctly named symbols will show up below
Answers do not have to be guessed in order
NOTE: Enter either symbol to answer for a pair.
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Indium & Nickel
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(Warning: comments may contain spoilers)
Reversible Elements Quiz
Created Apr 3, 2010 in
Featured Aug 30, 2010
Game Plays 19,690
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Moon Phases Quiz
Apr 4th, 2010 at 21:44 GMT
Ga is Gallium, not Gadolinium...
Apr 4th, 2010 at 23:31 GMT
Other than what mapmandan said, this is a good idea for a quiz
Apr 5th, 2010 at 00:28 GMT
Please accept my apologies for my carelessness. I should have known better than to launch this late at night! Ga is now fixed.
Comment below threshold:
May 9th, 2010 at 01:54 GMT
Technically anything with a 1 letter symbol is reversable... :D
May 10th, 2010 at 20:52 GMT
I know. That's why I carefully included in the instructions "the same two letters in opposite order".
May 16th, 2010 at 08:15 GMT
Original quiz, but Ni is Nickel, not Niobium.
May 18th, 2010 at 20:31 GMT
Gosh! It's almost unbelievable! Two similar blunders despite my 100% scores on elements symbols quizzes, AND the game goes past 80 plays before anyone even points the second one out. I am ashamed (but thanks anyway!).
Comment below threshold:
Jun 19th, 2010 at 19:05 GMT
Nice! Maybe take Ubu as a bonus?
Game published: Aug 30th, 2010 at 15:53 GMT
Aug 30th, 2010 at 16:15 GMT
Having them in alphabetical order makes it too easy to guess, I think. Randomizing their order might help eliminate this.
Aug 30th, 2010 at 16:17 GMT
Agree with matt. After I got through the ones I could come up with, it was too easy to see what the other few might be by the alphabetical listing. Maybe list them by the lowest atomic number instead.
Aug 30th, 2010 at 16:42 GMT
yea, this quiz is WAAAAY too easy to guess. the player should be required to type on the entire name of the elements, with a longer time limit of course...
Aug 30th, 2010 at 17:03 GMT
At least the beginning of the alphabet was easy to guess, once I had a few in. There were a lot before E, so it was easy to just trial and error those. Maybe that's part of the reason why the last one was the last - it took too long to get to M. Of course, people could do it anyway even without them being in alphabetical order, so maybe it doesn't make a difference either way.
Aug 30th, 2010 at 17:52 GMT
Yeah but difference is that with them being in alphabetical order, you know that the second letter has to be after the first one in the alphabet, which you wouldn't know if they were in random order.
Aug 30th, 2010 at 18:02 GMT
I think that's a fair comment on the alphabetical order: regrettably nobody mentioned this while I was still able to edit it! I wasn't sure whether it'd be considered difficult or easy, so I thought that bit of a clue might be appropriate.
Aug 30th, 2010 at 21:58 GMT
Any quiz with the periodic table gets five stars from me. Great job!
Aug 30th, 2010 at 22:33 GMT
I think there's too much time. I went through almost every element. But it was a good quiz.
Aug 31st, 2010 at 01:52 GMT
I agree with above comments about time. For the sake of argument I tested not using knowledge at all (just guessing based on alphabetic likelihood) - I started with each vowel (going through the alphabet for their combination) then moved on to common consonants. I was able to complete the quiz without any skill or knowledge at all with 44 seconds remaining. I don't think I would ahve been so successful had I relied on knowledge. My personal favourite solution - the one suggested by cradleofmexicans. Put the actual letters in the third column, and then give it a bit of extra time.
Aug 31st, 2010 at 13:20 GMT
Only on Sporcle will you find someone who misses silver but gets meitnerium (I must really be on this site too much);)
Sep 1st, 2010 at 20:46 GMT
Uuu should be a bonus answer.
Sep 29th, 2010 at 21:51 GMT
I gave up thinking of two-letter element abbreviations halfway through and just started systematically trying all two-letter combinations. If I had done it from the start I think I could have finished the quiz.
Oct 15th, 2010 at 23:12 GMT
how did you make it to have two answers
Oct 18th, 2010 at 17:21 GMT
@zachman1221: An example of an answer (as entered on the data page) is "Ac & Ca/Ac/Ca". This means Sporcle displays as the answer the one before the first / but either of the other answers is accepted as an alternative.
Sep 15th, 2011 at 18:40 GMT
Sep 16th, 2011 at 18:58 GMT
IUPAC spells it caesium. Since you only need the chemical symbol, it doesn't matter whether you agree or not, you get credit for the answer anyway.
Oct 24th, 2011 at 23:22 GMT
Too bad Antimony has no reverse
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