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alkali metals
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What is a row of elements acros the periodic table called?
A PERIOD. NB A columns down the table is a GROUP.
What are the elements in the first group that have one outer shell electron and that are very reactive called?
The elements in the first group with one outer shell electron and high reactivity are called alkali metals. This group includes elements such as lithium, sodium, and potassium. Alkali metals readily lose their outer electron to form positive ions in chemical reactions.
What is the differenc between group and period?
A group in the periodic table is a column of elements with similar chemical properties, while a period is a row of elements with increasing atomic number. Elements in the same group have the same number of valence electrons, which contributes to their similar properties. On the other hand, elements in the same period have the same number of electron shells.
How does the numbers of electrons change across a period of elements?
The number of valence electrons for the elements increases across a period, from 1 (group 1) to 8 (group 18).
What is a group of elements on a periodic table called?
It is called an elemental group.
What is the group of 17 elements is called?
A group of 17 elements is called a period in the periodic table. This period corresponds to the number of electron shells in an atom within that group. Elements in the same period have the same number of electron shells.
What are the elements in group 1 called in the period table?
Alkali Metals
What is a row of elements acros the periodic table called?
A PERIOD. NB A columns down the table is a GROUP.
What are the elements in group 2 called in the period table?
alkali earth moms
What group of elements in the periodic table is made up of elements that are gases at room temperature?
The elements in column 18 of a wide form periodic table or Column VIII of a narrow form periodic table, commonly called the noble gases. Also, both elements in the first period, the elements in groups 15, 16, and 17 of the second period, and the element in group 17 of the third period.
Each row of elements on the periodic table is called a?
Each (horizontal) row is called a '''period''', whereas each (vertical) column is called a group.
What is the first group on the period table called?
the alkali metals
What elements are in group 17?
Group 17 elements are called the halogens. Group 18 elements are called the noble gases.
What are the elements in group 17?
Group 17 elements are called the halogens. Group 18 elements are called the noble gases.
What is a row of elements across the periodic table called?
Well, darling, a row of elements across the periodic table is called a period. It's like a little family reunion where elements with similar properties get together and show off their atomic numbers in style. So, next time you see a row of elements lined up, just remember they're strutting their stuff in a period.
What are the elements in the first group that have one outer shell electron and that are very reactive called?
The elements in the first group with one outer shell electron and high reactivity are called alkali metals. This group includes elements such as lithium, sodium, and potassium. Alkali metals readily lose their outer electron to form positive ions in chemical reactions.
What is a group and the period?
Rows of elements are called periods. The period number of an element signifies the highest unexcited energy level for an electron in that element. Columns of elements help define element groups. Elements within a group share several common properties. Groups are elements have the same outer electron arrangement.
