Covalent Bond and Polyatomic Ions

What two types of atoms make a covalent bond?

• 2 Nonmetals
• 1 Nonmetal and 1 Metal
• 2 Metals
• 2 Noble Gases

In chemical compounds, covalent bonds form when

• the electronegativity difference between two atoms is very large.
• electrons are completely transferred between two metals.
• pairs of electrons are shared between two nonmetal atoms.
• two nonmetal atoms are attracted to each other by opposite charges.

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NGSS.HS-PS1-1

What is it called if there are three-pairs of electrons being shared?

• Triple bond
• Bond length
• Tribond
• Chocolate Mousse

Which of the following is the correct Lewis dot structure for the molecule fluorine (F₂)?

• A
• B
• C
• D

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the VSEPR shape shown in this digram?

• Tetrahedral
• Trigonal Pyramidal 
• Pyramidal

• Bent

Which of these sets of atoms could form a covalent bond?

• Fr and K
• Sc and O 
• F and Cl
• He and Pt

 A lone pair is defined as

• A pair of bonding electrons
• One non-bonding electron
• A pair of non-bonding electrons
• Electrons in the first energy level

Which chemical formula would have the shape represented in the picture?

• BF₃

• CH₄

• PCl₅

• CO₂

Which chemical formula would have the shape represented in the picture?

• BF₃

• CH₄

• H₂O

• CO₂

Tags

NGSS.HS-PS1-3

Which chemical formula would have the shape represented in the picture?

• CH₄

• CO₂

• PCl₅

• BF₃

Tags

NGSS.HS-PS1-3