--> Whewellite has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings whewe & ite which should not be misspelled with single 'L'
Wrong Spelling:  whewe-l-ite 
Correct Spelling:  whewe-ll-ite 
Find more wrongly spelled words of Whewellite to spell it well.