Bonding and Lewis structures

Which of the following is an ionic bond?

• H₃N
• CaCl₂
• NO₂
• SCl

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-3

When writing Lewis Structures, only __________ electrons are used.

• Inner shell
• Core 
• Valence
• Stable

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the first thing you need to do when drawing Lewis Structures?

• Draw your bonds
• Count the number of valence electrons
• Subtract to make the valence number even
• Add to make the valence number even

How many electrons should Carbon have around its Lewis dot model?

• 1
• 3
• 4
• 5

Tags

NGSS.HS-PS1-1

Which of the following elements will NOT be surrounded by an octet of electrons in a correctly drawn Lewis structure?

• carbon
• oxygen
• chlorine
• hydrogen

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many valence electrons do elements in Group 2A have?

• 12
• 4
• 1
• 2

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many valence electrons are in Phosphorus?

• 15
• 4
• 5
• 31

Tags

NGSS.HS-PS1-1

How many total valence electrons are available for bonding in the sulfate ion (SO₄)^-2?

• 30 electrons

• 32 electrons

• 28 electrons

• impossible to tell

In a Lewis structure, what do you do with the total number of valence electrons if you have an ion with a +1 charge?

• Divide the valence number by 1

• Multiply the valence number by 1

• Add 1 to the valence number

• Subtract 1 from the valence number

What is the correct formula for this molecule?

• NH
• N₃H
• NH₃
• NH₄

Tags

NGSS.MS-PS1-1