These are true and false questions and I want to be sure of my answers. Please someone check. Thanks:

The eight-element periodicity found in the Periodic Table is related to the number of electrons in the outermost energy level of the atoms that make up each element. True
2. Electrons in the first energy level of an atom are called valence electrons. False
3. For atoms important to life, if the first energy level is the outermost shell, it is stable with 2 electrons. If any other energy level is the outermost shell, it is stable with 8 electrons. True
4. Atoms tend to react in ways that give each atom a stable outer shell of electrons. True
5. Atoms with an outer shell that is almost empty are located on the right side of the Periodic Table while atoms with an outer shell that is full or almost full are located on the left side of the Periodic Table. False
6. Atoms in the same row of the Periodic Table tend to have the same number of valence electrons. False
7. Atoms with 7 valence electrons tend to be non-reactive. False

all are correct

Electrons on the outermost layer of an atom are called valence electrons.

True
False

1. The statement is true. The eight-element periodicity found in the Periodic Table is related to the number of electrons in the outermost energy level of the atoms that make up each element. This is known as the octet rule.

2. The statement is false. Electrons in the first energy level of an atom are not called valence electrons. Valence electrons are the electrons in the outermost energy level of an atom.

3. The statement is true. For atoms important to life, if the first energy level is the outermost shell, it is stable with 2 electrons (except for hydrogen which is stable with 1 electron). If any other energy level is the outermost shell, it is stable with 8 electrons. This is also known as the octet rule.

4. The statement is true. Atoms tend to react in ways that give each atom a stable outer shell of electrons. This is because a stable outer shell is associated with lower energy and greater stability.

5. The statement is false. Atoms with an outer shell that is almost empty are actually located on the left side of the periodic table, while atoms with an outer shell that is full or almost full are located on the right side of the periodic table.

6. The statement is false. Atoms in the same column, or group, of the Periodic Table tend to have the same number of valence electrons. Atoms in the same row, or period, have different numbers of valence electrons.

7. The statement is false. Atoms with 7 valence electrons tend to be highly reactive as they only need to gain one more electron to achieve a stable outer shell of 8 electrons. Atoms with a completely filled outer shell (8 valence electrons) or an almost filled outer shell (such as helium with 2 valence electrons) are generally non-reactive.

To check if your answers are correct, let's go through each statement one by one:

1. The eight-element periodicity found in the Periodic Table is related to the number of electrons in the outermost energy level of the atoms that make up each element. - TRUE

To determine the number of electrons in the outermost energy level (also known as the valence shell), you can look at the group number (vertical columns) of an element in the Periodic Table. Elements in the same group have similar chemical properties because they have the same number of valence electrons.

2. Electrons in the first energy level of an atom are called valence electrons. - FALSE

Valence electrons are the electrons present in the outermost energy level of an atom. In most atoms, the first energy level can hold a maximum of 2 electrons, and those in the first energy level are typically not considered valence electrons.

3. For atoms important to life, if the first energy level is the outermost shell, it is stable with 2 electrons. If any other energy level is the outermost shell, it is stable with 8 electrons. - TRUE

In general, elements in the first row (period) of the Periodic Table tend to have their outermost shell filled with 2 electrons to achieve stability. For elements in the other rows, the outermost shell is considered stable if it contains 8 electrons. This concept is known as the octet rule.

4. Atoms tend to react in ways that give each atom a stable outer shell of electrons. - TRUE

Atoms react with other atoms to either gain, lose, or share electrons in order to achieve a stable electron configuration with a full outer shell. This stability is often achieved by following the octet rule mentioned in the previous statement.

5. Atoms with an outer shell that is almost empty are located on the right side of the Periodic Table, while atoms with an outer shell that is full or almost full are located on the left side of the Periodic Table. - FALSE

The placement of elements on the Periodic Table is primarily based on their atomic number, which is the number of protons in the nucleus of the atom. The arrangement does not solely depend on whether the outer shell is empty or full. The organization of the Periodic Table is based on various other factors such as electron configuration and chemical properties.

6. Atoms in the same row of the Periodic Table tend to have the same number of valence electrons. - FALSE

Atoms in the same row (period) of the Periodic Table do not necessarily have the same number of valence electrons. The number of valence electrons increases as you move from left to right across a period.

7. Atoms with 7 valence electrons tend to be non-reactive. - FALSE

Atoms with 7 valence electrons (such as the elements in Group 17, also known as the halogens) are highly reactive. These elements tend to gain one electron to achieve a stable octet electron configuration, making them more likely to undergo chemical reactions.

Based on the above explanations, your corrected answers would be:

1. True
2. False
3. True
4. True
5. False
6. False
7. False