1.
The d sublevel has
Correct Answer
A. 5 orbitals
Explanation
The d sublevel has 5 orbitals. This is because the d sublevel can hold a maximum of 10 electrons, and each orbital can hold a maximum of 2 electrons. Since there are 5 orbitals in the d sublevel, it can accommodate a total of 10 electrons, fulfilling the electron capacity of the sublevel.
2.
In a p sublevel, how many electrons can fit?
Correct Answer
C. 6
Explanation
In a p sublevel, there are three orbitals (px, py, and pz) which can hold a maximum of two electrons each. Therefore, the total number of electrons that can fit in a p sublevel is 3 orbitals x 2 electrons = 6 electrons.
3.
Which of these is a subatomic particle?
Correct Answer
D. All of these
Explanation
All of these options are subatomic particles. An electron is a negatively charged particle found in the electron cloud surrounding an atom's nucleus. A proton is a positively charged particle located in the nucleus of an atom. A neutron is a neutral particle also found in the nucleus. Therefore, all of these options are correct as they are subatomic particles.
4.
An f sublevel hold can have _____ f orbitals.
Correct Answer
A. 7
Explanation
The f sublevel can hold a maximum of 7 f orbitals. Each orbital can hold a maximum of 2 electrons, so the f sublevel can hold a total of 14 electrons. However, since there are only 7 f orbitals, the maximum number of electrons that can be accommodated is 7.
5.
A d sublevel can hold _______ electrons.
Correct Answer
C. 10
Explanation
The d sublevel can hold a maximum of 10 electrons. This is because the d sublevel has 5 orbitals, each of which can hold 2 electrons. Therefore, 5 orbitals x 2 electrons per orbital = 10 electrons.
6.
Which of these sublevels is the highest in energy?
Correct Answer
A. 5s
Explanation
The 5s sublevel is the highest in energy among the given options. In the periodic table, energy levels increase as the principal quantum number (n) increases. Since 5s has a higher value of n compared to 3d, 4s, and 4p, it is located at a higher energy level.
7.
Electrons fill energy levels and sublevels
Correct Answer
B. Lower in energy first
Explanation
Electrons fill energy levels and sublevels in an orderly manner, starting with the lowest energy level first. This is known as the Aufbau principle. According to this principle, electrons occupy orbitals in a way that minimizes their energy. Therefore, they fill the lower energy levels before moving on to higher energy levels. This filling pattern follows a specific order based on the arrangement of orbitals and sublevels within each energy level.
8.
Maximum how many sublevels can the fifth energy level of an atom hold?
Correct Answer
B. 5
Explanation
The fifth energy level of an atom can hold a maximum of 5 sublevels. Each energy level can have a maximum of n sublevels, where n is the principal quantum number of that energy level. In this case, the fifth energy level has a principal quantum number of 5, so it can hold a maximum of 5 sublevels.
9.
The maximum number of electrons in the 2nd energy level is
Correct Answer
A. 8
Explanation
The maximum number of electrons in the 2nd energy level is 8 because the second energy level can hold a maximum of 8 electrons according to the principle 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. This is because the second energy level has 4 orbitals, and each orbital can hold a maximum of 2 electrons. Therefore, the total number of electrons in the second energy level is 4 orbitals x 2 electrons per orbital = 8 electrons.
10.
3s and 4s sublevels
Correct Answer
C. Have the same shape
Explanation
The 3s and 4s sublevels have the same shape because they both belong to the s orbital, which has a spherical shape. The number in front of the s (3 or 4) indicates the energy level or shell, but it does not affect the shape of the orbital. The s orbital can hold a maximum of 2 electrons, regardless of the energy level. Therefore, the 3s and 4s sublevels have the same shape but can hold different amounts of electrons. The statement about being equally far from the nucleus is not accurate, as the energy level increases as you move away from the nucleus.