Why is mendeleev the father of the periodic table

Because

Explanation:

He started the development of the periodic table. He arranged the chemical elements by their atomic mass. He also predicted the discovery of other elements, and left some spaces open in his periodic table for them.

the answer is true.

a pan containing water is placed in a positio n where it is exposed to a 10 mile per hour wind. the pan contains a uniform depth of 1.27 cm of water, is quite wide, and has a length of 2.44 m in the wind direction. the water in the pan is at a constant temperature of 15.5 °c.