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 eight in the first energy level, zero in the second energy level eight in the first energy level, zero in the second energy level 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 Skip to navigation

5 answers

The correct response for an atom with eight electrons spread across its energy levels is:

Two in the first energy level, six in the second energy level.

According to the rules of electron configuration, the first energy level can hold a maximum of 2 electrons, and the second energy level can hold a maximum of 8 electrons. For an atom with 8 electrons, it will occupy the first and second energy levels as described.

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 Add the number of electrons to the number of protons. Add the number of electrons to the number of protons. Subtract the number of electrons from the number of protons. Subtract the number of electrons from 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 statement for finding the number of neutrons to include in the model of an atom is:

Subtract the atomic number from the mass number.

In this context, the atomic number represents the number of protons in the nucleus of the atom, and the mass number represents the total number of protons and neutrons. Therefore, the number of neutrons can be calculated using the formula:

\[ \text{Number of neutrons} = \text{Mass number} - \text{Atomic number} \]

Which of the following does the atomic number of an atom represent?(1 point) Responses the number of protons in the atom the number of protons in the atom the number of neutrons in the atom the number of neutrons in the atom the number of particles outside the nucleus of the atom the number of particles outside the nucleus of the atom the number of particles in the nucleus of the atom the number of particles in the nucleus of the atom Skip to navigation page 23 of 23

The correct response is:

the number of protons in the atom.

The atomic number of an atom is defined as the number of protons found in the nucleus of that atom, and it also determines the element's identity.