Solve this ‘wordoku’ in the same way as a sudoku with letters instead of numbers (the nine letters once in each row, column and nine-square cell). Once solved, one of the overall diagonals contains the jumbled surname of an English chemist who discovered two elements. With which other chemist (who also discovered two elements) is he associated?

This week’s letters are: A E L M N O S T W

 

 

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