Cobalt has 27 electrons-27 protons and Iron has 26 electrons-26 protons. Which answer is correct?

A) Iron and Cobalt atoms attract since they don't have the same number of electrons, meaning Iron is positively charged and Cobalt is negatively charged.

B) Iron and Cobalt atoms don't attract since their protons and electrons are balanced, meaning both elements are neutral.

B) Iron and Cobalt atoms don't attract since their protons and electrons are balanced, meaning both elements are neutral.

Explanation:

Electrons have a charge of -1 and protons have a charge of +1. If an atom has the same amount of electrons as protons, the overall charge of the atom is neutral (no charge)

Hint: Think of 27 and subtract 27 from that.

27 - 27 = 0

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.

answer; 4 electrons;