Chemical Bonding and Atomic Properties

The video tutorial reviews how to identify the type of bonding in molecules, whether ionic, covalent, or metallic. It explains why metals give up electrons and nonmetals accept them, focusing on periodic trends like atomic radius and electron affinity. Atomic radius decreases across a period due to increased protons attracting electrons more, while it increases down a group due to added energy levels. Electron affinity, the attraction for electrons, is inversely related to atomic radius. Examples illustrate these concepts, comparing atomic radius and electron affinity of elements. The video also details the characteristics of ionic, covalent, and metallic bonds, and provides examples of identifying bond types in compounds.

What type of bond is formed when a metal gives up electrons to a nonmetal?

• Covalent bond

• Ionic bond

• Metallic bond

• Hydrogen bond

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

• It decreases

• It fluctuates

• It increases

• It remains the same

Which of the following best describes electron affinity?

• The distance from the nucleus to the outermost electron

• The number of protons in an atom

• An atom's attraction for electrons

• The energy required to remove an electron

Which element has a larger atomic radius: phosphorus or chlorine?

• It depends on the temperature

• They have the same atomic radius

• Chlorine

• Phosphorus

Which element has a larger electron affinity: calcium or strontium?

• Strontium

• They have the same electron affinity

• It depends on the pressure

• Calcium

What type of bond is formed between two nonmetals?

• Van der Waals bond

• Metallic bond

• Covalent bond

• Ionic bond

What is the characteristic feature of metallic bonding?

• Formation of dipoles

• Sea of mobile electrons

• Sharing of electrons

• Transfer of electrons

In a covalent bond, how do atoms achieve stability?

• By losing electrons

• By sharing electrons

• By transferring electrons

• By gaining electrons

What type of bond is present in lithium chloride?

• Hydrogen bond

• Metallic bond

• Ionic bond

• Covalent bond

Which of the following is true about hydrogen in terms of bonding?

• It is a metal

• It is a nonmetal

• It forms metallic bonds

• It always forms ionic bonds