periodic table and electrons review

Bohr's model of the atom proposed that ___.

• electrons move around the nucleus in fixed orbits
• neutrons move around the nucleus
• neutrons do not exist, but are just paired protons and electrons
• the nucleus spins

Order the atomic models below from the oldest to the most recent.

• 2, 1, 3, and 4

• 1, 2, 4, and 3

• 3, 2, 4, and 1

• 3, 1, 2, and 4

Tags

NGSS.MS-PS1-1

This energy level holds 8 electrons in total.

• 1st

• 2nd

• 3rd

• 4th

Tags

NGSS.HS-PS1-1

This sublevel can hold up to 10 electrons?

• s

• p

• d

• f

The 3rd energy level can hold up to ___ electrons

• 8

• 18

• 14

• 16

Right before an electron can be placed in the 3 d-orbital, where must electrons go?

• 2 to the 4 s orbital

• 6 to the 4 p orbital

• 10 to the 2 d orbital

• 2 to the 3 f orbital

Tags

NGSS.HS-PS1-1

An atom that has gained energy beyond normal is said to be ...

• excited

• energized

• naturalized

• grounded

How does an atom give up excessive energy when dropping from a higher energy state to a lower state?

• a photon

• a positron

• an electron is expelled.

• a neutron is expelled.

1s2 2s2 2p6 3s2 3p4: That would be which element?

• Sulfur

• Silicon

• Fluorine

• Oxygen

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What would the electron configuration be for Boron (Atomic #5)

• 1s2 2s2 2p1

• 1s2 2s3

• 1s2 2s2 2p5

• 1s4 2s1

Tags

NGSS.HS-PS1-1