Question

Based on the periodic table , which of the following groups of elements should have very similar chemical properties? A. potassium (K), aluminum (Al), neon (Ne) B. carbon (C), iodine (I), hydrogen (H) C. lithium (Li), sodium (Na), potassium (K) D. manganese (Mn), magnesium (Mg), molybdenum (Mo)

Answer 1

lithium (Li), sodium (Na), potassium (K)

Step-by-step explanation:

Columns in the periodic table are also called families or groups. Elements within a group have similar chemical properties. Elements that are not in the same group do not have similar chemical properties. This means that lithium (Li), sodium (Na), and potassium (K) should have very similar chemical properties since they are in the same group.

Answer 2

option C= lithium , sodium and potassium shows similar chemical properties.

Step-by-step explanation:

The elements shows similar chemical properties if they have same number of valance electrons.

As we move left to right in periodic table the number of valance electrons increases in case of every element

When we move top to down in the group of periodic table the number of valance electrons remain same. So the elements in same group shows similar properties.

For example:

In given options the elements in option C belongs to the same group i.e group one and all are alkali metals. That's why lithium , sodium and potassium shows similar chemical properties.