Periodic Table Element Classification

The video tutorial explains the concepts of electropositive and electronegative character in elements, focusing on metals and non-metals. It discusses how metals tend to lose electrons and become positive ions, while non-metals gain electrons. The tutorial examines periodic table trends, highlighting that metallic character decreases and non-metallic character increases from left to right across a period. It also covers Group 3 and Group 14 elements, illustrating how metallic character increases and non-metallic character decreases from top to bottom within a group. The video concludes with a summary of these key points.

What is the primary reason metals tend to form positive ions?

• They have multiple valence electrons.

• They can easily lose their single valence electron.

• They have a strong electronegative character.

• They have a high atomic radius.

What is the characteristic of non-metals in terms of electron gain?

• They lose electrons easily.

• They have no tendency to gain electrons.

• They prefer to gain electrons to become stable.

• They neither gain nor lose electrons.

Which of the following elements is a semi-metal?

• Sodium

• Chlorine

• Silicon

• Phosphorus

Which of the following is true about the elements in the third group?

• They include metals, semi-metals, and non-metals.

• All are metals.

• They are all gases.

• All are non-metals.

As you move from left to right across a period in the periodic table, what happens to the metallic character?

• It fluctuates.

• It remains constant.

• It decreases.

• It increases.

Which element in group 14 is classified as a non-metal?

• Tin

• Lead

• Carbon

• Germanium

Where are non-metals typically located on the periodic table?

• Top left

• Bottom left

• Top right

• Bottom right

Which element is a metal in group 14?

• Carbon

• Silicon

• Germanium

• Tin

What happens to the non-metallic character as you move down a group in the periodic table?

• It increases.

• It decreases.

• It remains constant.

• It fluctuates.

What is the general trend of metallic character as you move down a group?

• It remains constant.

• It increases.

• It decreases.

• It fluctuates.