Practice Final Quiz

How many electrons does Si contain? (click to see image)

• 14
• 28
• 2
• 4

Tags

NGSS.HS-PS1-1

How many electrons can the first energy level hold?

• 1
• 2
• 8
• 0

The atomic number tells you...

• the number of protons

• the number of neutrons

• the number of electrons

Which two particles are contained in the nucleus of an atom?

• Protons and Neutrons

• Protons and Electrons

• Electrons and Neutrons

Tags

NGSS.MS-PS1-1

The electron configuration of an atom is 1s²2s²2p⁶.  The number of electrons in the atom is 

• 3
• 6
• 8
• 10

An orbital can at most hold how many electrons?

• 1 electron
• 2 electrons
• 3 electrons
• 4 electrons

Which are the four atomic orbitals?

What electron configuration matches an oxygen ion? (Z=8)

• 1s²2s²2p⁶3s2, 3p⁶4s²3d¹⁰4p⁵

• 1s²2s²2p⁴

• 1s²2s²2p⁶

• 1s²2s²2p⁶3s²3p⁶4s²3d¹

Tags

NGSS.HS-PS1-1

Which is the correct electron configuration of As (Astatine)?

• 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p3

• 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p3

• 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6

• 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6

Which is the terminal electron configuration of Br (Bromine)?

• 4p5

• 4p6

• 3d10

• 3d5