The ground state electronic configuration for sodium is 1s22s22p63s1 . What is the orbital quantum number of the last (3s1) electron?
a. 3
c. 2
b. 1
d. 0
D
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Thin Lenses: Which of the following terms describe lenses that are thinner at the center than at the edges? (There could be more than one correct choice.)
A. converging lenses B. diverging lenses C. concave lenses D. convex lenses
Which of the following is NOT true about pseudo streaming?
A. Files are typically small. B. Another term for pseudo streaming is progressive downloading. C. The term pseudo means fake or simulated. D. There may be delays in playback as it downloads.
The Paleozoic era ended and the Mesozoic era began about ______________ million years ago
Fill in the blank(s) with correct word
A 25-kg television set rests on four rubber pads, each having a height of 1.0 cm and a radius of 0.60 cm. A 200-N horizontal force is applied to the television set. How far does it move sideways? The shear modulus of rubber is 2.6 × 106 N/m2
A) 6.8 mm B) 3.4 mm C) 1.7 mm D) 1.5 mm E) 1.3 mm