Question

the properties of eka- aluminium period by mendeleev are the same as the properties of latter discovered elment and explain the answer ​

Answer 1

Answer:

Mendeleev made an early periodic table . In modern periodic table elements are in order of atomic number in periods & groups eletronic configurations model how electrons are arranged in atoms

mendeleev arranged the elements in order to increasing relative atomic mass . when he did this he noted that the chemical properties of elements and their compounds showed a periodic table.

he left gaps for yet to be discovered element .

he switched the order of a few elements to keep the group consistent.