How many electrons are present in non- metals in their outermost shell?

To determine the number of electrons present in the outermost shell of non-metals, we need to refer to the periodic table.

Step 1: Identify the non-metal element you are interested in.

Step 2: Locate the element on the periodic table.

Step 3: Look at the group number of the element. The group number represents the number of valence electrons, which are the electrons present in the outermost shell.

Step 4: Count the number of valence electrons based on the group number.

For example, let's consider oxygen (O) as a non-metal. Oxygen is located in Group 16 of the periodic table.

Step 1: Identify the non-metal element: Oxygen (O) Step 2: Locate the element on the periodic table: Oxygen is in the 2nd period and Group 16. Step 3: Look at the group number: Group 16. Step 4: Count the number of valence electrons: Group 16 elements have 6 valence electrons.

Therefore, non-metals in Group 16, such as oxygen, have 6 electrons in their outermost shell.