Chemical bonds

Identify the phrases that generally apply to molecular compounds,

• a. Contain metals and non metals

• b. Are often solids

• c. Have high melting points

• d. Contain ionic bonds

• e. Use covalent bonds

The attraction of the free-floating valence electrons for the positively charged metal ions.

• Coordination number

• Alloy

• Malleability

• Metallic bond

The general electron dot structure :X: could represent

• B

• Si

• Li

• F

Which of the following elements will form a similar ion?

• Be, Mg, Ca

• Na, K, Xe

• Cl, B, Ar

• Cl, O, S

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What type of chemical bond is formed when the difference between the electronegativities of the elements is equal to 0.7?

• polar covalent

• non-polar covalent

• ionic

Which of the following is true about ionic bonding?

• It is mostly formed between elements from groups IA, IIA, IIIA and a nonmetal.

• Lithium Fluoride is formed by ionic bonding

• Electrons are donated from one element to another

• All of the above

• None of the above

A chemical bond is:

• Made up of electrons

• An attractive force that holds atoms together

• All of the above

• None of the above

True or false. Covalent bonds are stronger than ionic bonds

Most atoms have no net charge because they have....

• an equal number of charged and non-charged particles

• have neutrons in the nucleus

• an equal number of neutrons and protons

• an equal number of electrons and protons

The correct Lewis-dot structure for Iodine ( I ) would have how many valence electrons?

• 6

• 8

• 7

• 1