Helium (he) and neon (ne) are elements in group 8a of the periodic table. how do the electron dot diagrams of these elements compare?
a. the electron dot diagram of helium has six fewer electrons than the electron dot diagram of neon.
b. the electron dot diagram of helium has eight fewer electrons than the electron dot diagram of neon.
c. both the electron dot diagram of helium and the electron dot diagram of neon have two dots.
d. both the electron dot diagram of helium and the electron dot diagram of neon have eight dots.

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.

c. electrical charges of ionic bonds.