Mendeleev left empty spaces in his periodic table for elements he suspected existed but had yet to be discovered. He left no spaces for the Noble gases that we now have in the modern periodic table. Give at least two reasons on why this group was challenging to discover, based on what we now know about the atom including sub-atomic particles. Mendeleev had a group VIII but they are NOT the noble gases.
Atomic Structure
The basic structure of an atom is defined as the component-level of atomic structure of an atom. Precisely speaking an atom consists of three major subatomic particles which are protons, neutrons, and electrons. Many theories have been stated for explaining the structure of an atom.
Shape of the D Orbital
Shapes of orbitals are an approximate representation of boundaries in space for finding electrons occupied in that respective orbital. D orbitals are known to have a clover leaf shape or dumbbell inside where electrons can be found.
Mendeleev left empty spaces in his periodic table for elements he suspected existed but had yet to be discovered. He left no spaces for the Noble gases that we now have in the modern periodic table. Give at least two reasons on why this group was challenging to discover, based on what we now know about the atom including sub-atomic particles. Mendeleev had a group VIII but they are NOT the noble gases.
Mendeleev is the first who makes groups and rows. Mendeleev also left empty spaces in his periodic table for elements he suspected existed but had yet to be discovered. Also he tells the properties of undiscovered elements.
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