PS Unit 2 Atomic Structure Review

Which of the following are true about shells/orbitals?

• Electrons are found here

• Shell 1 = 2, Shell 2 = 8, Shell 3 = 8

• Also known as energy levels

• All of the answers are true

What is found in the nucleus?

• Electrons

• Protons

• Neutrons

• Protons and neutrons

Tags

NGSS.MS-LS1-2

If a neutral atom has an atomic mass of 19 and contains 9 electrons, its atomic number must be

• 9

• 19

• 10

• 11

Tags

NGSS.MS-PS1-1

Which of the following is true of Hydrogen-1?

• It has no neutrons

• It has one orbital and it is full

• It is a metalloid

• It is found in period 2

Using the table, which of the following elements would be an example of an ion?

• Silicon & Oxygen

• Silicon

• Oxygen & Chlorine

• Chlorine & Silicon

Tags

NGSS.MS-PS1-1

Using the table, which of the following elements would be an example of a neutral atom?

• Silicon & Oxygen

• Silicon

• Oxygen & Chlorine

• Chlorine & Silicon

Tags

NGSS.MS-PS1-1

Silicon has ___ valence electrons.

• 1

• 2

• 3

• 4

Tags

NGSS.HS-PS1-1

What element has 4 shells and 2 valence electrons?

• Si

• Ge

• Ca

• Li

Which of the following is NOT true about metals?

• Most are dull (not shiny)

• Most are shiny

• They are ductile & malleable

• Good conductors of heat and electricity

Tags

NGSS.MS-PS3-3

An isotope of fluorine has 9 protons and 11 neutrons. What is the mass number for that isotope of fluorine?

• 9

• 19

• 10

• 20