Question

Which of the following most affects the placement of an element in the periodic table?
A.

the element's importance to human life

B.

the amount of the element on Earth

C.

the properties of the element

D.

the order in which the element was discovered

Answer 1

The answer is C- it's properties. The column that an element is in reflects the number of valence electrons it has, and elements with the same number of valence electrons have similar characteristics.