Phy Sci 6ed Chap 5 Review

Which of the following accurately represents the Lewis structure for Phosphorus tribromide using dots rather than dashes to represent the valence electrons.

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Draw the Lewis structure for Sulfur dichloride (SCl₂)

Answer explanation

How many electrons are being shared in a molecule of water?

• 2

• 4

• 6

• 8

Tags

NGSS.MS-PS1-1

When drawing atoms in their Lewis structure, what is something you must check to be true?

• each atom has 8 valence electrons

• the atoms are arranged in a geometrically pleasing format

• the atoms are in alphabetical order

• the largest atom is in the center

Tags

NGSS.MS-PS1-1

In carbon dioxide, carbon has an electronegativity of 2.55 and oxygen has an electronegativity of 3.44. Is the bond between an oxygen and carbon atom polar?

• Impossible to know without experimentation

• No
• Yes

Tags

NGSS.HS-PS1-1

In carbon dioxide, carbon has an electronegativity of 2.55 and oxygen has an electronegativity of 3.44. Is the entire molecule of carbon dioxide polar? How do you know?

• No, because they are geometrically balanced

• Yes, because the bonds are polar

• No, because the bonds are nonpolar bonds

• Yes, because the number of atoms around the carbon is 8

Tags

NGSS.HS-PS1-1

The electronegativity of oxygen is 3.44. Is dioxygen, the diatomic oxygen molecule, a polar molecule?

• No
• Maybe
• I don't know
• Yes

If Magnesium bonds with Iodine to form magnesium iodide, what would you predict to be the ratio of magnesium to iodine atoms in the ionic bond?

• 1:2; MgI₂

• 1:3; MgI₃

• 2:1; Mg₂I

• 1:1; MgI

Tags

NGSS.MS-PS1-1

predict the name and formula for a compound containing Iron and fluorine if Iron's oxidation state is +2

• Iron(II) fluoride (FeF)
• Iron(II) fluorite (FeF₂)

• Iron(II) fluorine (FeF₂)

• Iron(II) fluoride (FeF₂)

What would the name of the covalent compound containing 5 atoms of bromine and one atom of phosphorus be?

• phosphorus bromide
• bromine pentaphosphide
• bromine phosphide
• phosphorus pentabromide

Tags

NGSS.MS-PS1-1