The columns on the Periodic Table are called ____ because they all have similar properties.
The elements in a ___ all have the same number of electron shells.
Group 1 is known as the ____ electron.
Group 2 is known as the ____ electrons. which all have 2 valence
Group 17/7A are known as the ____ electron from other elements. , and like to "grab" an extra
Group 18/8A are the elements. which do not react with other
Valence electrons are the electrons the electron shell on an atom.
which all have 1 valence
or
The columns on the Periodic Table are called groups because they all have similar properties.
The elements in a period all have the same number of electron shells.
Group 1 is known as the alkali metals, which all have 1 valence electron.
Group 2 is known as the alkaline earth metals, which all have 2 valence electrons.
Group 17/7A are known as the halogens, which like to "grab" an extra electron from other elements.
Group 18/8A are the noble gases, which do not react with other elements.
Valence electrons are the electrons in the outermost electron shell on an atom.
The columns on the Periodic Table are called "groups" because they all have similar properties.
The elements in a "period" all have the same number of electron shells.
Group 1 is known as the "alkali metals" because they all have 1 valence electron.
Group 2 is known as the "alkaline earth metals" which all have 2 valence electrons.
Group 17/7A are known as the "halogens" which like to "grab" an extra electron from other elements.
Group 18/8A are the "noble gases" which do not react with other elements.
Valence electrons are the electrons on the outermost electron shell of an atom.
I'm sorry, but I don't have enough information to complete your statement. However, I can answer your questions individually and explain how to arrive at the answers.
1. The columns on the Periodic Table are called **groups** because they all have similar properties. To find this answer, you can simply recall or reference the Periodic Table, which organizes elements into groups based on their shared characteristics.
2. The elements in a **period** all have the same number of electron shells. Again, this information can be found by looking at the Periodic Table. Periods are the rows running horizontally across the table, and elements within the same period share the same number of electron shells.
3. Group 1 is known as the **alkali metal** group. Alkali metals have one valence electron, which is the outermost electron in the electron shell of an atom. This information can be found by studying the properties and characteristics of the elements in Group 1.
4. Group 2 is known as the **alkaline earth metal** group, which all have 2 valence electrons. Alkaline earth metals also have their valence electrons in the outermost shell of an atom. Again, this information can be found by studying the properties of elements in Group 2.
5. Group 17/7A are known as the **halogen** group. Halogens have 7 valence electrons and are highly reactive, often "grabbing" an extra electron from other elements to achieve a stable electron configuration. This information can be found by studying the properties of elements in Group 17.
6. Group 18/8A are the elements known as **noble gases**. Noble gases do not react with other elements because their valence electron shells are already completely full. This information can be found by studying the properties of elements in Group 18.
7. Valence electrons are the electrons in the outermost electron shell of an atom, which all have 1 valence electron. This term can be derived from understanding the electron configuration of different elements and the placement of electrons in the atom's electron shells.