Which one of the following is the correct electronic configuration for the sodium atom, which has 11 electrons?
A) 1s2 2s2 2p6 3s1
B) 1s2 2s1 3p6 2s2
C) 1s1 2s2 3p6 2s2
D) 1s2 2s2 2p6 3s2
E) 1s1 2s2 2p6 2s2
A
You might also like to view...
A fish weighing 16 N is weighed using two spring scales, each of negligible weight, as shown in the figure. What will be the readings of the scales?
A) The bottom scale will read 16 N, and the top scale will read zero. B) Each scale will read 16 N. C) The top scale will read 16 N, and the bottom scale will read zero. D) The scales will have different readings, but the sum of the two readings will be 16 N. E) Each scale will read 8 N.
A progressive JPEG is similar to an interlaced GIF.
Answer the following statement true (T) or false (F)
Atoms are held together by
A) the electrostatic force of attraction between the protons in the nucleus and the surrounding electrons B) the combined electrostatic force of attraction between the protons and neutrons in the nucleus and the surrounding electrons C) the force of gravitational attraction between the protons in the nucleus and the surrounding electrons D) the electrostatic force of attraction between the neutrons in the nucleus and the surrounding electrons
A 30-N box is pulled upward 6.0 m along the surface of a ramp that rises at 37° above the horizontal. How much work does gravity do on the box during this process?
A) -1100 J B) -110 J C) -140 J D) -180 J E) 120 J