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Regarding the modern periodic table, consider the following statements:
1. Properties of elements are a periodic function of their atomic number.
2. There are 7 groups and 18 periods.
Which of the statements given above is/are correct?
- a)1 Only
- b)2 Only
- c)Both 1 and 2
- d)Neither 1 nor 2
Correct answer is option 'A'. Can you explain this answer?
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Most Upvoted Answer
Regarding the modern periodic table, consider the following statement...
Properties of elements
- The first statement is correct. Properties of elements are indeed a periodic function of their atomic number. This is the fundamental principle behind the organization of the modern periodic table.
- The periodic table is arranged in such a way that elements with similar properties are placed in the same group/column. This periodic repetition of properties is directly related to the atomic number of the elements.
Groups and Periods
- The second statement is incorrect. There are actually 18 groups and 7 periods in the modern periodic table.
- Groups are the vertical columns on the periodic table, and there are 18 groups in total. Each group has elements with similar chemical properties.
- Periods are the horizontal rows on the periodic table, and there are 7 periods in total. Elements in the same period have the same number of electron shells.
- Therefore, the correct number of groups and periods in the modern periodic table are 18 and 7, respectively.
In conclusion, statement 1 is correct while statement 2 is incorrect. Properties of elements are indeed a periodic function of their atomic number, and there are 7 periods and 18 groups in the modern periodic table.
- The first statement is correct. Properties of elements are indeed a periodic function of their atomic number. This is the fundamental principle behind the organization of the modern periodic table.
- The periodic table is arranged in such a way that elements with similar properties are placed in the same group/column. This periodic repetition of properties is directly related to the atomic number of the elements.
Groups and Periods
- The second statement is incorrect. There are actually 18 groups and 7 periods in the modern periodic table.
- Groups are the vertical columns on the periodic table, and there are 18 groups in total. Each group has elements with similar chemical properties.
- Periods are the horizontal rows on the periodic table, and there are 7 periods in total. Elements in the same period have the same number of electron shells.
- Therefore, the correct number of groups and periods in the modern periodic table are 18 and 7, respectively.
In conclusion, statement 1 is correct while statement 2 is incorrect. Properties of elements are indeed a periodic function of their atomic number, and there are 7 periods and 18 groups in the modern periodic table.
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Community Answer
Regarding the modern periodic table, consider the following statement...
1. The Modern Periodic Law states: 'Properties of elements are a periodic function of their atomic number'.
2. The atomic number gives us the number of protons in the nucleus of an atom and this number increases by one in going from one element to the next.
3. Elements, when arranged in order of increasing atomic number Z, lead us to the classification known as the Modern Periodic Table. Prediction of properties of elements could be made with more precision when elements were arranged on the basis of increasing atomic number.
4. The Modern Periodic Table has 18 vertical columns known as ‘groups’ and 7 horizontal rows known as ‘periods’.
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Regarding the modern periodic table, consider the following statements: 1. Properties of elements are a periodic function of their atomic number.2. There are 7 groups and 18 periods.Which of the statements given above is/are correct?a) 1 Onlyb) 2 Onlyc) Both 1 and 2d) Neither 1 nor 2Correct answer is option 'A'. Can you explain this answer?
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