Horizontal rows in the periodic table are called:a)Cellb)Tablec)Groupsd)PeriodsCorrect answer is option 'D'. Can you explain this answer?

Question

Answer

The Periodic Table: Families and Periods. In the periodic table of elements, there are seven horizontal rows of elements called periods. The vertical columns of elements are called groups, or families.

Answer

Yes it's universal Chemistry truth....there are totally 7 horizontal rows are there they are called as periods and the vertical columns are called as group or families... so the option D is correct...hope u clear...!👍

Answer

Explanation:

The periodic table is a tabular arrangement of the chemical elements. It is organized in rows and columns according to the electron configurations of the elements. The horizontal rows in the periodic table are called periods. There are seven periods in the periodic table, numbered from 1 to 7. Each period represents a different energy level of the elements in that row. The elements in each period have the same number of electron shells.

Characteristics of periods:

Elements in the same period have the same number of electron shells

Elements in the same period have different numbers of electrons in their outermost shell

The number of elements in each period varies

The properties of the elements in each period change gradually as you move across the table from left to right

Examples:

Period 1 contains only two elements: hydrogen and helium. Both have one electron shell.

Period 2 contains eight elements: lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, and neon. All these elements have two electron shells.

Period 3 contains eight elements: sodium, magnesium, aluminum, silicon, phosphorus, sulfur, chlorine, and argon. All these elements have three electron shells.

Conclusion:

In conclusion, the horizontal rows in the periodic table are called periods. There are seven periods in the periodic table, and each period represents a different energy level of the elements in that row. The elements in each period have the same number of electron shells, and their properties change gradually as you move across the table from left to right.

Answer

Periodic Table and its Rows

The periodic table is a tabular arrangement of chemical elements based on their atomic number, electron configurations, and chemical properties. The horizontal rows in the periodic table are known as periods.

Definition of Periods

Periods in the periodic table are a series of elements in increasing atomic number, arranged in a row from left to right. Each period corresponds to the filling of a principal quantum shell of electrons. The first period contains only two elements, hydrogen and helium. The second period contains eight elements, and so on.

Properties of Elements in a Period

Elements in the same period have the same number of electron shells. The number of valence electrons increases from left to right across a period, which affects the chemical properties of elements. Elements in the same period also have the same number of electron shells, which means they have similar atomic radii and ionization energies.

Periodic Trends in a Period

Properties of elements change across a period in a predictable way. For example, atomic radius decreases across a period from left to right, while ionization energy increases. This trend occurs because the number of protons in the nucleus increases across the period, causing the valence electrons to be pulled closer to the nucleus.

Conclusion

In conclusion, horizontal rows in the periodic table are called periods. They represent a series of elements in increasing atomic number, arranged in a row from left to right. The number of valence electrons and atomic radius of elements in a period change in a predictable way. Understanding the organization of the periodic table is essential in studying chemistry.

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Vertical rows are called groups

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There are totally 7 horizontal rows are there they are called as periods and the vertical columns are called as group or families.

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#Verticle columns in periodic table are called as groups.... ## Horizontal rows are called an periods

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D

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Ya, horizontal rows are called periods becoz as we know that vertical rows are known as columns.....

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Its fact that horizont row called period and vertical are collums

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Yes . . dddddddd

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B

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