Question

22. Who is credited with discovering the electron using the Cathode Ray Tube? A) Democritis B) Dalton C) J.J. Thompson D) Rutherford 23. How many valence electrons are in the Bohr model shown? A) 9 B) 7 C) 8 D) 2 24. A wavelength of light is $1.0 \times 10^{-9}$ m. What is the frequency? Equation: Wavelength \times Frequency = Speed of light Speed of light = $3.0 \times 10^{8}$ m/s A) $3 \times 10^{14}$ Hz B) $3 \times 10^{17}$ Hz C) $\frac{1}{3} \times 10^{17}$ Hz D) $3 \times 10^{-1}$ Hz 9 P 10 N

          22. Who is credited with discovering the electron using the Cathode Ray Tube?
A) Democritis
B) Dalton
C) J.J. Thompson
D) Rutherford
23. How many valence electrons are in the Bohr model shown?
A) 9
B) 7
C) 8
D) 2
24. A wavelength of light is $1.0 \times 10^{-9}$ m. What is the frequency?
Equation: Wavelength \times Frequency = Speed of light
Speed of light = $3.0 \times 10^{8}$ m/s
A) $3 \times 10^{14}$ Hz
B) $3 \times 10^{17}$ Hz
C) $\frac{1}{3} \times 10^{17}$ Hz
D) $3 \times 10^{-1}$ Hz
9 P
10 N

22. Who is credited with discovering the electron using the Cathode Ray Tube?
A) Democritis
B) Dalton
C) J.J. Thompson
D) Rutherford
23. How many valence electrons are in the Bohr model shown?
A) 9
B) 7
C) 8
D) 2
24. A wavelength of light is 1.0 × 10^-9 m. What is the frequency?
Equation: Wavelength ×Frequency = Speed of light
Speed of light = 3.0 × 10^8 m/s
A) 3 × 10^14 Hz
B) 3 × 10^17 Hz
C) (1)/(3)× 10^17 Hz
D) 3 × 10^-1 Hz
9 P
10 N

Added by Ryan L.

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