are helium, nitrogen, and oxygen in the same period
No, helium, nitrogen, and oxygen are not in the same period on the periodic table.
Helium (He) is in the first period, Nitrogen (N) is in the second period, and Oxygen (O) is in the third period. Periods in the periodic table represent the number of electron shells or energy levels that the elements' atoms have.
No, helium, nitrogen, and oxygen are not in the same period on the periodic table.
Helium (He) is in the first period, which consists of only two elements: hydrogen (H) and helium (He).
Nitrogen (N) is in the second period, which also includes elements such as lithium (Li), beryllium (Be), boron (B), carbon (C), and oxygen (O).
Oxygen (O) is also in the second period, along with nitrogen (N) and the other elements mentioned above.
Periods on the periodic table indicate the energy level (or shell) in which the elements' valence electrons are located. Each subsequent period represents a higher energy level.
To determine if helium, nitrogen, and oxygen are in the same period, you need to know their positions in the periodic table. Here's how you can find the answer:
1. Look up the atomic numbers of helium (He), nitrogen (N), and oxygen (O). The atomic number represents the number of protons in an atom's nucleus.
2. Helium has an atomic number of 2, nitrogen has an atomic number of 7, and oxygen has an atomic number of 8.
3. Now, compare the atomic numbers to the periodic table. Each row in the periodic table is called a period, and the elements within the same period have the same number of atomic shells.
4. In this case, helium has two shells, nitrogen has two shells, and oxygen has two shells. Therefore, helium, nitrogen, and oxygen are indeed in the same period, which is the second period.
So, to answer your question, helium, nitrogen, and oxygen are all in the second period of the periodic table.