why did mendeleev leave blank spaces in his version of the periodic table? mendeleevs periodic table…

why did mendeleev leave blank spaces in his version of the periodic table? mendeleevs periodic table arranged elements in order of increasing atomic mass; spaces were left for elements not having the correct atomic mass. mendeleevs periodic table arranged elements in groups of similar chemical properties; spaces were left for elements not having a similar chemical property. mendeleevs periodic table arranged elements in order of increasing atomic mass; it was noticed that chemical properties repeated. mendeleev predicted an element had not been discovered to fit the space. done

why did mendeleev leave blank spaces in his version of the periodic table? mendeleevs periodic table arranged elements in order of increasing atomic mass; spaces were left for elements not having the correct atomic mass. mendeleevs periodic table arranged elements in groups of similar chemical properties; spaces were left for elements not having a similar chemical property. mendeleevs periodic table arranged elements in order of increasing atomic mass; it was noticed that chemical properties repeated. mendeleev predicted an element had not been discovered to fit the space. done

Answer

Brief Explanations:

Mendeleev arranged elements by increasing atomic mass and noticed periodicity in chemical properties. He left blanks for undiscovered elements that would fit the periodic pattern.

Answer:

Mendeleev’s periodic table arranged elements in order of increasing atomic mass; it was noticed that chemical properties repeated. Mendeleev predicted an element had not been discovered to fit the space.