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Why does the change for the atomic radii of elements in period 3 from sodium to argon look similar to period 2?
Wiki User
∙ 11y ago
Because the trend is the same. Atomic radius decreases from left to right across a period.
Wiki User
∙ 11y ago
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How does the atomic raduis change across a period of the periodic table?
Atomic radius usually decreases from left to right across a period of the periodic table.
How are the elements arrange in the periodic table?
Elements are arranged on the Periodic Table in the order of the atomic number, in groups and periods.
What is a period in periodic table?
In the periodic table, a period would be a horizontal row, so named because it was noticed that as the atomic number increased, the elements would periodically evidence similar chemical properties and could thus could be grouped in a way that manifest these similarities. This quality is explained by how electrons fill their orbitals as you progress across the period; elements in the columns having some chemical similarites to others in their column.
How the properties of element repeat after regular intervals?
According to the Modern Periodic Law, the properties of the elements are repeated after certain regular intervals when these elements are arranged in order of their increasing atomic numbers. Further an examination of the electronic configuration of the various elements clearly indicates that with a gradual increase in atomic number there occurs a repetition of similar outer electronic configurations after certain regular intervals. By correlating these two observations, we can say that, the cause of periodicity in properties is the repetition of similar outer electronic configurations at certain regular intervals. When we go across the period the no. of shells remains same but the number of electrons keep increasing .this result in more force of attraction among electrons and protons and thus atomic size decreases. But when we go down the group, the no. of valence electrons remains same but the no. of shells keep increasing.this result in less force of attraction. Therefore, atomic size increases.
How is each element placed in the periodic table?
Elements are arranged into rows in order of increasing mass, so that elements with similar properties were in the same column. They are organized by type, such as nonmetals, metals, and metalloids, and solids, liquid, gas, or not found in nature.
Why does the change for the atomic radii of the elements for period 3 from sodium to argon look similar to period 2?
Because the trend is the same. Atomic radius decreases from left to right across a period.
What is the change in atomic radii for the elements in period 2?
Seventeen
Does a period contain elements that are similar?
no. A period is a row of elements in the periodic table whose properties change gradually and predictably.
What characteristics must two elements share if they are in the same period?
The same number of electron shells,thus similar atomic structure.
Does A Period Table Contain Elements That Have Similar Properties?
The Periodic table is a representation of all elements grouped in a manner that lists elements with similar properties in columns. Adjacent columns have deceasing or increasing characteristics
How are period and group trends in atomic radii are related to electron configuration?
The atomic radius decreases along the elements across a period. Along a group, there is an increment in the atomic radius of corresponding elements.
What do elements in same atomic period have?
Elements in the same period of the periodic table have sequentially increasing numbers of protons.
How are the elements in a period different?
By their atomic weight..protons and electrons.
What is the atomic numbers of the elements in period 2?
Two. Period 1 contains H and He.
Which group of the main group elements contains the largest elements - Atomic Radius?
Group-1 has largest atomic radius. It decreases across a period
Why are the elements in period three together?
They are placed in order of the atomic number.
What characteristics is shared by elements in the same period?
Elements in the same period have the same number of electron shells, moving across a period (progressing group to group), elements gain electrons and protons and become less metallic. This arrangement reflects the periodic recurrence of similar properties as the atomic number increases.
