chemial bonding

If an atom loses two electrons what charge will it have?

• + 2
•  - 2
• +1
• -1

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Any molecule with only two atoms must be linear. Three-atom molecules such as BeCl₂ can also be linear. For linear molecules, the bond angle is

• $360\degree$

• $180\degree$

• $120\degree$

• $90\degree$

Molecules such as boron trichloride that have three bonded atoms and no unshared pairs have what shape?

• trigonal planar

• trigonal pyramidal

• trigonal bipyramidal

• tetrahedral

Which molecule would have this molecular geometry?

• BF₃
• CH₄
• PCl₅
• CO₂

Tags

NGSS.MS-PS1-1

How many lone pairs are in this molecule's structure?

• 6
• 2
• 0
• 4

What shape is shown here?

• Octahedral

• Tetrahedral

• Trigonal bipyramidal

• Seesaw

Identify the molecule structure

• Bent

• Linear

• Trigonal Planar

• Pyramidal

 A lone pair is defined as

• A pair of bonding electrons
• One non-bonding electron
• A pair of non-bonding electrons
• A pair of electrons on the central atom

Which one of the following is the correct bond angle between atoms adopting a trigonal planar geometry?

• 180°

• 109.5°

• 90°

• 120°

From the following possible responses, select those responses that give the combination of bonds that makes up a triple covalent bond.

• Two sigma bonds

• Two pi bonds

• One sigma bond and two pi bonds

• Two sigma bonds and one pi bond

Tags

NGSS.HS-PS1-2