Metales

The video tutorial explains the characteristics of metallic elements on the periodic table. It describes how these elements typically have 1, 2, or 3 electrons in their outer shells, making them prone to losing electrons and forming cations. Additionally, the video highlights the properties of metals, such as their ability to conduct heat and electricity, and their malleability and shine when polished.

What is the typical number of electrons in the outer shells of metallic elements?

• 10, 11, or 12

• 7, 8, or 9

• 4, 5, or 6

• 1, 2, or 3

Why can metallic elements easily form cations?

• They have a full outer shell of electrons.

• They can easily gain electrons.

• They can easily lose electrons.

• They have no electrons in their outer shell.

What happens to the electrons in the outer shell of metallic elements?

• They remain unchanged.

• They are lost to form cations.

• They are gained from other atoms.

• They are shared with other atoms.

Which of the following is NOT a property of metals in their pure form?

• Shiny when polished

• Malleable

• Brittle

• Good conductors of heat

Which property allows metals to be shaped without breaking?

• Opacity

• Density

• Malleability

• Conductivity