What is the oxidation state of an individual bromine atom in nabro3?

What elements have 2 electrons inthe 4s sublevel

Iknow #2 is d. i just need to know why

Select the correct answer. which phrase correctly describes temperature? o a. average rotational kinetic energy of the particles in an object o b. average energy of the particles in an object c. average translational kinetic energy of the particles in an object od. all energy possessed by the particles in an object