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How many groups and periods are present in the modern periodic table?
- a)7 groups, 7 periods
- b)18 groups, 7 periods
- c)9 groups, 9 periods
- d)8 groups, 7 periods
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
How many groups and periods are present in the modern periodic table?a...
There is no need to explain the answer.You can directly check the structure of Modern Periodic Table.
You will found that there are total 18 groups and 7 periods in Modern Periodic Table.
One thing is important that:-
_ "Group number indicates the number of valence electron.
For ex- A is a element belong to 2 group then it has 2 valence electron in its outermost shell.
But from 3 group to 12 group valency is not fixed.
_ "Period indicates the no.of shell.
For ex- B is a element belong to 3 period, it means it has 3shells.
I hope you understand my language and words.
Thanks.
byyeee.
You will found that there are total 18 groups and 7 periods in Modern Periodic Table.
One thing is important that:-
_ "Group number indicates the number of valence electron.
For ex- A is a element belong to 2 group then it has 2 valence electron in its outermost shell.
But from 3 group to 12 group valency is not fixed.
_ "Period indicates the no.of shell.
For ex- B is a element belong to 3 period, it means it has 3shells.
I hope you understand my language and words.
Thanks.
byyeee.
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How many groups and periods are present in the modern periodic table?a...
Understanding the Modern Periodic Table
The modern periodic table is a systematic arrangement of elements based on their atomic number and properties. It consists of distinct groups and periods that help classify elements.
Groups in the Modern Periodic Table
- The periodic table contains 18 groups.
- Each group represents elements with similar chemical properties and the same number of valence electrons.
- For example, Group 1 consists of alkali metals, while Group 17 contains halogens.
Periods in the Modern Periodic Table
- There are 7 periods in the modern periodic table.
- Each period corresponds to the filling of electron shells around the nucleus of atoms.
- As you move down a period, the atomic number increases, leading to changes in physical and chemical properties.
Significance of Groups and Periods
- The arrangement into groups and periods allows for easier understanding of element behavior.
- Elements in the same group exhibit similar reactivity, while periods show trends in properties such as electronegativity, ionization energy, and atomic radius.
Conclusion
In summary, the modern periodic table is structured with 18 groups and 7 periods, making option 'B' the correct answer. This organization facilitates the study and prediction of element characteristics, supporting chemists and scientists in their research and applications.
The modern periodic table is a systematic arrangement of elements based on their atomic number and properties. It consists of distinct groups and periods that help classify elements.
Groups in the Modern Periodic Table
- The periodic table contains 18 groups.
- Each group represents elements with similar chemical properties and the same number of valence electrons.
- For example, Group 1 consists of alkali metals, while Group 17 contains halogens.
Periods in the Modern Periodic Table
- There are 7 periods in the modern periodic table.
- Each period corresponds to the filling of electron shells around the nucleus of atoms.
- As you move down a period, the atomic number increases, leading to changes in physical and chemical properties.
Significance of Groups and Periods
- The arrangement into groups and periods allows for easier understanding of element behavior.
- Elements in the same group exhibit similar reactivity, while periods show trends in properties such as electronegativity, ionization energy, and atomic radius.
Conclusion
In summary, the modern periodic table is structured with 18 groups and 7 periods, making option 'B' the correct answer. This organization facilitates the study and prediction of element characteristics, supporting chemists and scientists in their research and applications.
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How many groups and periods are present in the modern periodic table?a)7 groups, 7 periodsb)18 groups, 7 periodsc)9 groups, 9 periodsd)8 groups, 7 periodsCorrect answer is option 'B'. Can you explain this answer?
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