SE Review - Atomic Theory & Electrons

How many electrons can a d sublevel hold?

• 14

• 10

• 2

• 6

Tags

NGSS.HS-PS1-1

How many orbitals does an s sublevel have?

• 1

• 3

• 5

• 7

How many orbitals does an f sublevel have?

• 1

• 3

• 5

• 7

How many electrons can an p sublevel hold?

• 5

• 10

• 6

• 2

This could be the dot diagram of

• Mg

• Cl

• C

• O

Tags

NGSS.HS-PS1-1

How many valence electrons should Lithium have in its Lewis dot model?

• 1

• 2

• 3

• 4

Tags

NGSS.HS-PS1-1

The mass # tells us the mass of the atom. Which two subatomic particles make up the mass of the atom?

• protons and electrons

• neutrons and electrons

• Kyrontrons and Kytrons

• protons and neutrons

What can you do to find the number of neutrons in an atom?

• It's the same as the atomic #.

• Ask Sierra!

• Subtract the atomic # (protons) from the mass # (protons and neutrons)

• Multiply the mass # (protons and neutrons) and the atomic # (protons)

What is the atomic number?

• the number of protons
• the number of protons and neutrons
• the number of neutrons
• the number of protons and electrons

24.1% of all the isotopes of a an element have a mass of 75.23 amu, 48.7% have a mass of 74.61 amu, and 27.2% have a mass of 75.20 amu.
What is the average mass of this element?

• 74.92 amu
• 24.97 amu
• 75.01 amu
• 74.51 amu