The number of electrons in a neutral atom is called its
A)
principal quantum number.
B)
orbital quantum number.
C)
magnetic quantum number.
D)
atomic number.
E)
none of the above answers.
D
You might also like to view...
Matter Waves: A proton has a speed of 7.2 × 104 m/s. What is the energy of a photon that has the same wavelength as the de Broglie wavelength of this proton? (melectron = 9.11 × 10-31 kg, c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ? s)
A. 230 keV B. 150 keV C. 300 keV D. 370 keV E. 440 keV
Three identical capacitors are connected in series across a potential source (battery). If a charge of Q flows into this combination of capacitors, how much charge does each capacitor carry?
A) 3Q B) Q C) Q/3 D) Q/9
Venus may have been more Earth-like in the past because
A) it was rotating more rapidly B) the Sun was dimmer, putting out less solar radiation C) it was not as close to the Sun D) its atmosphere was thinner
The position of a particle as it moves along the x axis is given by x = 15e?2t m, where t is in s. What is the acceleration of the particle at t = 1.0 s?
A. 22 m/s B. 60 m/s C. 8.1 m/s D. 15 m/s E. 35 m/s