Which element will not react with other elements. be ne fe?

Option (b) is the correct answer.

Explanation:

Atomic number of Be is 4 and its electronic distribution is 2, 2. So, to attain stability it loses two electrons. Hence, it is reactive in nature.

Atomic number of neon is 10 and its electronic distribution is 2, 8. As its valence shell is completely filled so, it neither loses or gain an electron.

Therefore, it is unreactive in nature.

Atomic number of Fe is 26 and its electronic configuration is .

Hence, to become stabilized it will readily lose an electron as half-filled d-shell is more stable in nature.

Thus, we can conclude that out of the given options Ne element will not react with other elements.

- "the choice that is not an indicator of a chemical change is "state of matter changes". more common than not, chemical reactions produce energy in the form of light or heat. along with energy, they also produce a new substance called the product that could be in any state of matter (solid, gas, or liquid)."

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.