0
Elements in the third row of the Periodic Table, such as sodium and magnesium, have three electron shells. These elements have the electron configuration that includes the first, second, and third energy levels or shells.
If it has three outer electrons, it's in group 3. It has 2 shells, so it's in period 2. In periodic table this corresponds to B, boron.
carbon
Add your answer:
Earn +20 pts
What to all of the elements in period three have in common?
All elements in period three have three electron shells. They also have increasingly higher atomic numbers and exhibit a range of properties from nonmetals to metals as you move across the period.
Which elements have incomplete penultimate shells?
Elements with incomplete penultimate shells include transition metals (elements in groups 3-12) and inner transition metals (lanthanides and actinides). These elements have partially filled d or f orbitals in their penultimate energy level. Examples include elements like chromium, copper, and uranium.
What element has the same number of atomic shells as sodium?
Magnesium has the same number of atomic shells as sodium. Both elements have 3 atomic shells.
How many shells in period 4?
There are 18 elements in period 4 of the periodic table, corresponding to 4 shells.
Which other elements contain the same number of atomic shells as sodium written as the chemical symbols?
The elements potassium (K), rubidium (Rb), and cesium (Cs) each contain the same number of atomic shells as sodium.
What are elements of a group that has the same number of shells?
The elements in a group do not have the same number of shells, however, the elements in a horizontal row do have the same number of shells.
How many electron shells does a sodium atom have?
A Sodium atom has three shells. For future reference, this can be discovered later by looking at which period an element falls in. For example, all group 1 elements have 1 shell, all group 2 elements have two shells, and so on.
What to all of the elements in period three have in common?
All elements in period three have three electron shells. They also have increasingly higher atomic numbers and exhibit a range of properties from nonmetals to metals as you move across the period.
What elements have outer shells?
protons
What Elements in the same row are filling up the same energy level as you move from left to right?
Elements in the same row, or period, of the periodic table fill up the same energy level as you move from left to right. This is because elements in the same period have the same number of electron shells.
How many how many electrons does sodium have?
A Sodium atom has three shells. For future reference, this can be discovered later by looking at which period an element falls in. For example, all group 1 elements have 1 shell, all group 2 elements have two shells, and so on.
How many electrons does a sodium electron have?
A Sodium atom has three shells. For future reference, this can be discovered later by looking at which period an element falls in. For example, all group 1 elements have 1 shell, all group 2 elements have two shells, and so on.
Do noble gases have valence shells?
Yes they have eight electrons in their valence shells. This is why they are not reactive. All elements have valence shells.
Does the periodic table explain the shell model or does the shell model explain the periodic table?
The shell model explains the periodic table. It describes how electrons are arranged in energy levels (shells) around the nucleus, influencing the chemical properties and behavior of elements. This organization of electrons into shells follows patterns that are reflected in the periodic table.
Which elements have incomplete penultimate shells?
Elements with incomplete penultimate shells include transition metals (elements in groups 3-12) and inner transition metals (lanthanides and actinides). These elements have partially filled d or f orbitals in their penultimate energy level. Examples include elements like chromium, copper, and uranium.
What does it mean when two or more elements are in the same row on the periodic table?
It means that the elements have same number of shells. Period determines the number of shells of an element.
How many shells will transition metals use to bond with other elements?
Transition metals can use the two outermost shells/orbitals to bond with other elements.
