A model of an atom shows eight electrons in rings that represent different energy levels. How many electrons are in each energy level?(1 point)
Responses
two in the first energy level, six in the second energy level
two in the first energy level, six in the second energy level
zero in the first energy level, eight in the second energy level
zero in the first energy level, eight in the second energy level
four in the first energy level, four in the second energy level
four in the first energy level, four in the second energy level
eight in the first energy level, zero in the second energy level
The correct response is: two in the first energy level, six in the second energy level.
Which statement about an atom is correct?(1 point)
Responses
The neutron has a negative charge and is found in the nucleus.
The neutron has a negative charge and is found in the nucleus.
The proton has no charge and is found in the nucleus.
The proton has no charge and is found in the nucleus.
The electron has a negative charge and is found outside of the nucleus.
The electron has a negative charge and is found outside of the nucleus.
The neutron has no charge and is found outside of the nucleus.
The correct response is: The electron has a negative charge and is found outside of the nucleus.
A student wants to draw a model of an atom. Which statement describes how to find the number of neutrons to include in the model?(1 point)
Responses
Subtract the number of electrons from the number of protons.
Subtract the number of electrons from the number of protons.
Add the number of electrons to the number of protons.
Add the number of electrons to the number of protons.
Subtract the atomic number from the mass number.
Subtract the atomic number from the mass number.
Add the atomic number and the mass number.
The correct response is: Subtract the atomic number from the mass number.
Which of the following does the atomic number of an atom represent?(1 point)
Responses
the number of particles outside the nucleus of the atom
the number of particles outside the nucleus of the atom
the number of neutrons in the atom
the number of neutrons in the atom
the number of particles in the nucleus of the atom
the number of particles in the nucleus of the atom
the number of protons in the atom
The correct response is: the number of protons in the atom.
A participle is a type of verb that can function as a(n) in a sentence. Participles can be present or past participles. Present participles always end in , and past participles end in unless they are irregular verbs.
A participle is a type of verb that can function as a(n) adjective or part of a verb phrase in a sentence. Participles can be present or past participles. Present participles always end in -ing, and past participles end in -ed or -en unless they are irregular verbs.
The correct answer is:
two in the first energy level, six in the second energy level.
To determine the number of electrons in each energy level of an atom, you can follow the "2n^2" rule. This rule states that the maximum number of electrons in an energy level is given by 2n^2, where "n" represents the energy level.
In this case, there are two energy levels represented by the rings in the model. So, for the first energy level (n=1), the maximum number of electrons would be 2(1)^2 = 2. For the second energy level (n=2), the maximum number of electrons would be 2(2)^2 = 8.
Therefore, in the given model, there are two electrons in the first energy level and six electrons in the second energy level.