The effect distance has on the strength of the force of gravity, the force of gravity the masses exert on each other. If one of the masses is doubled, the force of gravity between the objects is doubled, which increases but the force of gravity decreases.
To write the electron configuration, you begin with the
normal electron configuration of the element and then add or deduct the number
of electrons that the charge designates. Rubidium will change from
1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^1
to
1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 because it loses the last
electron.
Molar mass NaCl = 58 g
Mass of solute = 29 g
number of moles: mass of solute / molar mass
n = 29 / 58
n = 0.5 moles
hope this helps!
Hey there.
By adding up all the "exponents," you'll get a number of 19. By looking at a periodic table, the element of such an atomic number is potassium or K.