Question

Look at the two question marks between zinc (zn) and arsenic (as). at the time, no elements were known with atomic weights between 65.2 and 75. but mendeleev predicted that two elements must exist with atomic weights in this range. what led mendeleev to predict that two undiscovered elements existed in that range?

Answer 1

Mendeleev positioned elements in the periodic table in increasing order of their atomic numbers, such that elements having identical chemical properties and characteristics plunge into the same group.

What is Mendeleev's periodic table called?

• In order to represent similarities and patterns in the behavior of elements, Mendeleev created the periodic table, which is an arrangement of elements in an increasing atomic mass order in tablet form.
• Mendeleev stated that "Element characteristics are a periodic function of their atomic weight" in his renowned periodic law.
• The Periodic Table of Mendeleev is a table that Mendeleev created to list elements in the order of their atomic weights.

• Mendeleev discovered that there were two elements with atomic weights between 65.2 and 75 because he found it very satisfying that the properties of the elements were more similar and closer to this level.
• He also imagined having other elements with possessions similar to those of these other elements.
• In the periodic table, he left a blank for these two elements until they were finally discovered in their true existence.

Learn more about Mendeleev's periodic table

brainly.com/question/11974961

#SPJ4