Other scientists left blanks in their tables. what did mendeleev do that others did not

Hope this helps:

(if so please mark brainlest!!)

"Mendeleev arranged the elements in the order of increasing atomic mass, the properties where repeated. And he corrected the known atomic masses of some elements and used the patterns in his table to predict the properties of the elements he thought must exist but had not been discovered yet"

sleep paralysis is a parasomnia, events associated with sleep.

sleep paralysis happens when you are in the middle of waking up or falling asleep. it is the feeling of being conscious but unable to move. it definitely involves hallucinations.

i had a friend that had sleep paralysis and he told me a story one time where he was laying in bed and he couldn't move his body no matter how hard he tried and there was someone standing in the corner of his room coming towards him. he couldn't move and you can't "wake up" because you are already conscious. sometimes sleep paralysis can be triggered by frequent waking up during the night based off of multiple trips to the bathroom, or if you had ever been abused, sleep paralysis can start happening from things like that.