This puzzle follows from the Purple Periodic Puzzle and Green Periodic Puzzle (these puzzles are solved independently).
Yet another periodic table has been uncovered and hides a secret word.
Can you find out what's strange about this blue periodic table and find the answer?
Hint #1
Can you spot the 3 types of differences?
Hint #2
Both the letters that were altered and the letters they were changed into are important for finding the missing words.
Hint #3
The answer contains 11 letters, but it is not an element on the periodic table.
Hint #4
For each of 11 letters that were changed, take the original letter and the letter it was changed to, to get a new letter which is part of the solution.