Unit 3 MP Exam Practice

What is the atomic number of carbon?

• 6

• 12

• 8

• 14

Which subatomic particle has a negative charge?

• Proton

• Neutron

• Electron

• Positron

What is the maximum number of electrons that can occupy the first energy level of an atom?

• 2

• 8

• 18

• 32

Which group on the periodic table contains the noble gases?

• Group 1

• Group 2

• Group 17

• Group 18

Which of the following elements has the largest atomic radius?

• Lithium

• Sodium

• Potassium

• Cesium

Tags

NGSS.HS-PS1-1

Which element is the most electronegative?

• Oxygen

• Fluorine

• Chlorine

• Nitrogen

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the charge of a proton?

• 0

• +1

• -1

• +2

Which of the following is the correct electron configuration for a neutral oxygen atom?

Tags

NGSS.HS-PS1-1

Which of the following best describes ionization energy?

• The energy required to add an electron to an atom

• The energy required to hold on to an electron from an atom

• The energy released when an atom gains an electron

• The energy required to split a nucleus

Which of the following elements has the highest ionization energy?

• Lithium

• Sodium

• Potassium

• Hydrogen

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2