How many dots does the electron dot diagram of the neutral atom of fluorine have?

• 7

• 9

• 19

• 4

Tags

NGSS.HS-PS1-1

An atom has an electron configuration of [Ne]3s²3p¹, how many dots would be displayed in its electron dot diagram?

• 1

• 2

• 3

• 4

Tags

NGSS.HS-PS1-1

A covalent bond is a _________________ of electrons between atoms

• complete transfer

• sharing

• destruction

Tags

NGSS.HS-PS1-1

When drawing the Lewis Structure of a molecule, the atom that goes in the center is usually the

• atom with the greatest mass

• atom with the lowest electronegativity

• atom with the greatest electronegativity

• atom with the highest atomic number

How many valence electrons does the compound NF₃ have in total?

• 4

• 8

• 21

• 26

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many total valence electrons are in the polyatomic ion ammonium, NH₄⁺

• 5

• 8

• 9

• 10

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many total valence electrons are in the polyatomic ion sulfate, SO₄^2- ?

• 7

• 28

• 30

• 32

Tags

NGSS.HS-PS1-1

How many electrons are shared between two atoms that are involved in a double bond? (for example, between one C and one O in CO₂)

• 2

• 3

• 4

• 6

In a polar covalent bond, electrons are shared ___________.

• equally
• unequally
• between non-metals with similar electronegativities
• between a metal and a non-metal

A diatomic molecule like O₂ is always_______ because electrons are shared ________.

• nonpolar; equally

• polar; equally

• nonpolar; unequally

• nonpolar; unequally