What is the model that uses electron-dot structures to show how electrons are arranged in molecules?

• resonances

• Lewis Structures

• structural formulas

• molecules

What is the best definition of valence electrons?

• The outermost electron NOT involved in chemical reactions

• The innermost electrons involved in chemical reactions

• The outermost electrons involved in chemical reactions.

• The innermost electrons NOT involved in chemical reactions

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Carbon is in group 14. How many valence electrons does Carbon (C) have?

• 3

• 6

• 4

• 14

Tags

NGSS.HS-PS1-1

According to the Octet Rule, atoms of elements react with each other in order to get ______ electrons in their outermost energy level or shell.

• 2

• 4

• 8

• 10

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the name for when more than one valid Lewis structure can be drawn for a molecule?

• coordinate covalent bond

• resonance

• endothermic

• structural formula

What is the name when when one atom donates a pair of electrons to be shared with an atom or ion that needs two electrons to become stable

• coordinate covalent bond

• covalent bond

• polar covalent bond

• sigma bond

Select the 3 exceptions to octet rule.

• Expanded octet

• Even number electron

• Incomplete octet

• odd number electron

Molecule that has less than 8 electrons surrounding the central atom is classified as

• even number electron

• odd number electron

• expanded octet

• incomplete octet

Do you think Nitrogen at the central already achieved an octet?

• Yes

• No

What type of octet has SF6 got?

• achieved octet

• incomplete octet

• expanded octet

• odd number electrons