PLEASE HELP !! How is the chemical bonding between atoms of magnesium (Mg) different from the chemical bonding within a crystal of aluminum iodide (Allz)?
A. Freely moving electrons hold the aluminum and iodine atoms
together, and the attraction of opposite charges holds the
magnesium atoms together.
B. The attraction of like charges holds the magnesium atoms
together, and shared electrons hold the aluminum and iodine
atoms together
C. The attraction of like charges holds the aluminum and iodine
atoms together, and the sharing of electrons holds the magnesium
atoms together.
D. Freely moving electrons hold the magnesium atoms together, and
the attraction of opposite charges holds the aluminum and iodine
atoms together.

In one or two sentences, describe how you did in the balancing game. in a few more sentences, explain one strategy you learned for balancing more complex equations.

An charge with mass m and charge q is emitted from the origin, (x, y)=(0,0). a large, flat screen is located at x=l. there is a target on the screen at y position y(h), where y(h) > 0. in this problem, you will examine two different ways that the charge might hit the target. ignore gravity in this problem. 1.assume that the charge is emitted with velocity v(0) in the positive x direction. between the origin and the screen, the charge travels through a constant electric field pointing in the positive y direction. what should the magnitude e of the electric field be if the charge is to hit the target on the screen? express your answer in terms of m, q, y(h), v(0), and l. 2.now assume that the charge is emitted with velocity v(0) in the positive y direction. between the origin and the screen, the charge travels through a constant electric field pointing in the positive x direction. what should the magnitude e of the electric field be if the charge is to hit the target on the screen? express your answer in terms of m, q, y(h), v(0), and l.

Astudent weighing 700 n climbs at constant speed to the top of an 8 m vertical rope in 10 s. the average power expended by the student to overcome gravity is most nearly