Periodic Table

Question 1

Describe how Mendeleev arranged elements into a periodic table.

Answer 1

In his periodic table, Mendeleev arranged elements in rows by increasing atomic mass.

Question 2

Describe how Mendeleev predicted the existence and properties of some elements yet to be discovered.

Answer 2

By looking at the chemical properties and physical properties of the elements next to a gap

Question 3

Describe how the elements are arranged in the modern periodic table.

Answer 3

In the modern periodic table, the elements are arranged according to their atomic number

Question 4

Recall the positions of metals and non-metals in the periodic table.

Answer 4

the metal elements are placed on the left-hand side/middle. the non-metal elements are placed on the right-hand side.

Question 5

Explain the links between an element’s position in the periodic table and its electronic configuration.

Answer 5

Atomic number

Question 6

State what the term ‘electronic configuration’ means.

Answer 6

electronic configuration, also called electronic structure, the arrangement of electrons in energy levels around an atomic nucleus.