High School Chemistry Help » Elements and Compounds » Elements and Atoms » Help with Subatomic Particles
Explanation:

Electrons are notably smaller than nucleons (protons and neutrons), however, they have an equal amount of charge to protons. This is why an atom with the same amount of protons as electrons is considered electrically neutral.

You are watching: Which two subatomic particles are located in the nucleus of an atom

The nucleus itself is positively charged, as the electrons are located relatively far away from the atomic center.

 


Explanation:

A nucleon is defined as a particle that is found in the nucleus of an atom. The nucleus is composed of proton particles and neutron particles. These are densely bound together to form a nucleus; thus, these two subatomic particles are nucleons.

Electrons are found in a wide radius outside the nucleus, and are not considered nucleons.


Explanation:

The experiment that confirms the atom structure is Rutherford"s gold foil experiment. In the experiment, alpha particles were directed toward a thin piece of gold foil and reflected radiation was detected. The result of the experiment showed very little reflection, and most of the radiation passed straight through the foil. The conclusion drawn was that the majority of atomic volume consists of a loose electron cloud, and only a small region is occupied by a dense nucleus capable of reflecting the alpha radiation.


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Example Question #3 : Help With Subatomic Particles


Where are electrons located in an atom?


Possible Answers:

In the electron cloud


In the nucleus


In the valence shell


In the dense nucleus


In the electron nucleus


Correct answer:

In the electron cloud


Explanation:

Electrons are located in an electron cloud, which surrounds a densely packed center known as the nucleus. The nucleus is composed of protons and neutrons. Note that the valence shell contains electrons, but only refers to the region of the electron cloud farthest from the nucleus.

The experiment that confirms the atom structure is Rutherford"s gold foil experiment. In the experiment, alpha particles were directed toward a thin piece of gold foil and reflected radiation was detected. The result of the experiment showed very little reflection, and most of the radiation passed straight through the foil. The conclusion drawn was that the majority of atomic volume consists of a loose electron cloud, and only a small region is occupied by a dense nucleus capable of reflecting the alpha radiation.


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Example Question #4 : Help With Subatomic Particles


Which of the following statements is false?


Possible Answers:

Protons are located in the nucleus. They determine the atomic number of an element and carry a positive charge.


Electrons are located in the electron cloud. They carry a net negative charge and contribute a negligible mass to the atomic weight of the element


The protons in the nucleus attract the electrons in the electron cloud


All of these statements are true


Neutrons are located in the nucleus and have a net neutral charge. The number of neutrons determines the isotope of the element, and thus contributes to the atomic weight of the element.


Correct answer:

All of these statements are true


Explanation:

All of the given statements are true.

Protons and neutrons are found in the atom"s nucleus. The number of protons is the factor used to identify an atomic element, while the number of neutrons contributes to the overall atomic mass and isotopic identity. Electrons are found in the electron cloud and have negligible mass (significantly less than protons or neutrons). Protons are positively charged, while electrons are negatively charged, creating an attraction force.


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Example Question #1 : Help With Subatomic Particles


What is the charge of a neutron?


Possible Answers:

*


*


*



*


Correct answer:


Explanation:

Neutrons have no charge. Electrons have a charge of 

*
 and protons have a charge of 
*
.


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Example Question #2 : Help With Subatomic Particles


Which subatomic particles are found in the nucleus of an atom?


Possible Answers:

Neutrons and electrons


Protons only


Protons, neutrons, and electrons


Protons and neutrons


Protons and electrons


Correct answer:

Protons and neutrons


Explanation:

Protons and neutrons are found in the nucleus of atoms, while electrons are found in orbitals around the nucleus.

See more: How Many Ounces Is An Egg S Are In An Ounce? What Is The Volume Of An Egg


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Example Question #7 : Help With Subatomic Particles


How many electrons does the

*
 ion have?


Possible Answers:
Correct answer:

*


Explanation:

First, start off by finding S (sulfur) on the periodic table. According to the period table, the atomic number for sulfur is 16. That means that sulfur (in it"s uncharged, unionized state) has 16 protons, and 16 electrons. Since this ion has a negative two charge, we know it has picked up two extra electrons. Thus

*
 contains 18 electrons.


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