Ionic/Metallic and Covalent Compounds Corrections

The following atom is which of the below?  Se ^-2

• It is a covalent created from a nonmetal atom.

• It is a cation created from a metal atom.

• It is an anion created from a nonmetal atom.

Which of the following is true?

• Dimagnesium heptafluoride has two magnesium atoms and seven fluorine atoms.

• Dimagnesium heptafluoride has two magnesium atoms and six fluorine atoms.

• Dimagnesium heptafluoride has six magnesium atoms and two fluorine atoms.

Which of the following answer choices is the best explanation choice based on the image of METAL atoms above? 

• Since the ions created from nonmetals bonding are so close together, the valence electrons are able to move from ion to ion quickly forming the characteristic property of strong conductivity.

• Since the anions created from nonmetal atoms bonding are so close together, the valence electrons are able to move from ion to ion quickly forming the characteristic property of strong conductivity.

• Since the cations created from metal atoms bonding are so close together, the valence electrons are able to move from ion to ion quickly forming the characteristic property of strong conductivity.

Which of the following is the correct form for the chemical formula for Dinitrogen trioxide?

 

• N3O2
• NO2
• N2O3

What is the type of bond is illustrated by the molecule NaCl?

• Ionic bond
• Covalent bond
• Metallic bond

Which of the following is true about covalent compounds?

• Covalent compounds are formed by transferring electrons between atoms.
• Covalent compounds have high electrical conductivity.
• Covalent compounds are always solid at room temperature.
• Covalent compounds are formed by sharing of electrons between atoms.

Which is the correct choice for an ion created from an Indium atom?  (Group 13)

• In+3
• In-2
• In-4

Which of the following is the name of this compound:  Be₈F₄?

• OctoBeryllium tetrafluoride

• Beryllium fluorine
• Tetrafluoroberyllium
• Beryllium fluoride

In a covalent bond, the valence electrons are always

• Transferred
• Lost
• Gained
• Shared

What is the correct formula for an ionic compound of Aluminum and Iodine?

• AlI3

  (one AL and 3 I)

• AlI2

  (One AL and 2 I)

• AlI

  (One Al and one I)