For each ionic formula, identify the representative group number to which element X belongs. A. MgX
B. CaX2-
C. X3P-
D. A12X3-
E. X1-
F. XO-

At stp, which substance is the best conductor of electricity? a. nitrogen b. neon c. sulfur d. silver

Imagine that a new planet is discovered with two moons of equal mass: moon a and moon b. the mass of the new planet is greater than the combined mass of its moons. moon a is farther away from the new planet than moon b. what is the planet's gravitational pull on moon a compared to the planet's gravitational pull on moon b? the planet's gravity repels moon a with a greater force than it repels moon b, which is why moon a is farther away. the gravitational pull on moon b is greater than on moon a because moon b is closer to the new planet than moon a. the gravitational pull on moon b is greater than on moon a because moon b is farther away from the new planet than moon a. the gravitational pull on moon a is the same as the gravitational pull on moon b because distance does not affect the planet's gravity.

In a ball-and-stick molecular model, what do the sticks represent?