Only someone who truly knows and understands this, tell me if the electron configurations are right :

cobalt= [ar] 4s^2 3d^7
gallium= [ar] 3d^10 4s^2 4p^1
rhodium= [kr] 4d^8 5s^1
lanthanum= [xe] 5d^1 6s^2
europlum= [xe] 4f^7 6s^2
thulium= [xe] 6s^2 4f^13
ytterblum= [xe] 6s^2 4f^14
polonlum= [xe] 6s^2 4f^14 5d^10 6p^4
curium= [rn] 5f^7 6d^1 7s^2
rutherfordium= [rn} 5f^14 6d^2 7s^2

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.