Question

Elements in the same group have similar properties. Which pair of elements would you expect to have similar properties?

O carbon (C) and silicon (Si)
O copper (Cu) and zinc (Zn)
O hydrogen (H) and helium (He)
O nitrogen (N) and oxygen (O)

Answer 1

carbon (C) and silicon (Si)

Step-by-step explanation:

From the given choices, only carbon and silicon belongs to the same group on the periodic table.

A group on the periodic table is the vertical arrangement of elements. Each of the resulting vertical columns is known as a group or family.

• Elements in the same group have similar chemical properties because they all have the same number of electrons in their outermost shell.
• When valency controls the chemical reactivity of an elemental group.
• Since carbon and silicon are in the fourth group, they react the same ways and have similar chemical properties.