Periodic Table of Elements Part 3: Learn about Alkali metals

The video tutorial discusses alkali metals, focusing on their shiny, soft, and highly reactive nature. It explains their malleability, ductility, and the presence of one electron in their outermost orbital, making them highly reactive. The tutorial highlights cesium and francium as the most reactive elements, with francium being rare due to its radioactivity. Lithium, the least reactive alkali metal, is explored in detail, including its uses in batteries, nuclear reactions, and its mining process. The video also covers lithium's electrochemical potential and its role in rechargeable batteries, emphasizing its lightweight and alloying capabilities.

What characteristic of alkali metals makes them highly reactive?

• They are found freely in nature.

• They are non-conductive.

• They have one electron in their outermost orbital.

• They have a full outer electron shell.

Which two elements are the most reactive in the alkali metals group?

• Lithium and Sodium

• Potassium and Rubidium

• Cesium and Francium

• Sodium and Potassium

Why is francium considered rare?

• It is highly reactive with water.

• It is found only in Australia.

• It is extremely radioactive and occurs only in traces.

• It is used extensively in batteries.

What makes lithium suitable for use in batteries?

• Its high electrochemical potential.

• Its abundance in nature.

• Its ability to form strong alloys.

• Its non-reactive nature.

In which countries is lithium primarily mined?

• South Africa, Egypt, Morocco, and Kenya

• Brazil, Argentina, Mexico, and Peru

• Australia, China, Bolivia, and Chile

• USA, Canada, Russia, and India