Atoms

Chemistry Level 1

Which of the following is the farthest from the center of an atom?

Nucleus Neutrons Electrons Protons

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1 solution

Sravanth C.
Jul 15, 2015

The center of an atom contains protons (positively charged) and neutrons (no charge). These two parts constitute the nucleus of an atom, they are sometimes referred to as nucleons .

When, Rutherford conducted the gold foil experiment, he found that positively charged alpha particles(doubly charged helium ions), rebounded from the atom very rarely, and more rarer was a 18 0 180^\circ rebounce.

From this he concluded that the almost whole mass of an atom lies in the center. And that, it mostly contained positive charge.

Electrons on the other hand are very small particles (approximately 1 1838 \frac{1}{1838} times less heavy than a proton), which are negatively charged and revolve around the atom. The electrons are situated so far from the nucleus, that if the space between them was removed, all the matter on earth can be compressed to the size of an apple!

Moderator note:

Basic chemistry knowledge.

what is the furset galaxy away form the sun and clost to the moon this is a very hard question for so i would reccomended it to AQA A level students not lower school :)

Samuel Creed - 5 years, 9 months ago

"approximately 1/1838 times less heavy than a proton" By that you mean an electron weighs 1p/1838 or 1p - 1p / 1838?

Edgar Elenes - 5 years, 4 months ago

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I said "times" and that means 1 p 1838 \dfrac{1p}{1838} . ¨ \ddot\smile

Sravanth C. - 5 years, 4 months ago

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