Where is the most of the mass of an atom located? a) in the nucleus b) in the orbits c) in the electrons d) its split between the nucleus and the orbits

How are isotopes of the same chemical element alike? how are they different?

Main expenses you plan on making payments on a new car too. you want to spend 15% of your monthly net pay on the car payment, insurance, registration, and taxes combined. what is your monthly car allowance? $149.46 $298.91 $448.37 $597.83

Element before carbon on the periodic table