Question

1. type your answer below. why did mendeleev intentionally leave gaps in his periodic table?

Explanation:

Mendeleev left gaps in his periodic table because he predicted the existence of yet - to - be - discovered elements. He based this on the periodic trends in properties (such as atomic mass, chemical reactivity) of the known elements. For example, he predicted elements like eka - silicon (which later turned out to be germanium) by looking at the gaps in the pattern of properties of elements in a particular group.

Answer:

Mendeleev left gaps in his periodic table to account for and predict the existence of undiscovered elements based on the periodic trends of known elements.