IB Chemistry S2

• 24 neutrons and 53 nucleons

• 24 protons and 29 nucleons

• 24 protons and 29 neutrons

• 24 electrons and 53 neutrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

• 
• 
• 
• 

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which is correct for the line emission spectrum for hydrogen?

• Line M has a higher energy than line N

• Line N has a lower frequency than line M

• Line M has a longer wavelength than line N

• Lines converge at lower energy

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

Which electron transition emits radiation of the longest wavelength?

• A

• B

• C

• D

Tags

NGSS.HS-PS4-1

What is the element?

• O

• S

• Ne

• Cl

Tags

NGSS.HS-PS1-1

Which are the correct statements about the emission spectrum of hydrogen in the visible region?

I. The red line has a lower energy than the blue line

II. The lines converge at longer wavelength

III. The frequency of the blue line is greater than the frequency of the red line

• I and II only

• I and III only

• II and III only

• I, II and III

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

Which of the following transitions in the hydrogen atom emits the least energy?

• n=2 to n=1

• n=3 to n=1

• n=4 to n=2

• n=4 to n=3

Tags

NGSS.HS-PS4-3

Which represents the shape of an s atomic orbital?

• 
• 
• 
• 

Which species will require the least energy for the removal of one electron?

• Na⁺

• Mg⁺

• Al²⁺

• C³⁺

Tags

NGSS.HS-PS1-1