Which element is in the same period as Sodium (Na) and in the same group as Iodine (I)? A. Phosphorus (P)

B. Chlorine (Cl)

C. Oxygen (O)

D. Argon (Ar)

two charges are fixed in place on the x-axis as shown. the charge at x = 0 is negative and has magnitude q = 2 μcoulombs (1 μcoulomb = 10-6 coulombs). the charge at x = d, (d = +12 cm), is positive and has magnitude q = 4 μcoulombs. find a point x = xo along the x-axis at which the electric field is zero.

gravity

explanation:

k2s for potassium sulphide