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Why do we classify elements?...

Why do we classify elements?

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### Step-by-Step Solution: 1. **Understanding the Need for Classification**: - Elements are the basic building blocks of matter. With over 100 known elements, it becomes challenging to study them individually without any organization. 2. **Systematic Study**: - By classifying elements, we can categorize them based on their similar properties. This systematic approach allows for easier study and understanding. ...
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(a) Why do we classify elements? (b) What were the two criteria used by Mendeleev to classifiy the elements in his periodic table? (c) Why did Mendeleev leave some gaps in his periodic table? (d) In Mendeleev's periodic table, why was there no mention of noble gases like helium neon and argon? (e) Would you place the two isotopes of chlorine, Cl-35 and Cl-27 in different slots because of their different atomic masses or in the same slot because theri chemical properties are the same? Justify your answer.

(a) Why do we classify elements ? (b) What were the two criteria used by Mendeleev in creating his Periodic Table ? (c ) Why did Mendeleev leave some gaps in his Periodic Table? (d) In Mendeleev's Periodic Table, why was there no mention of Noble gases like Helium, Neon and Argon? (e ) Would you place the two isotopes of chlorine , Cl-35 and Cl-37 in different slots because of their different atomic masses or in the same slot because their chemical properties are the same ? Justify your answer.

How do we classify elements into metals and nonmetals on the basis of electronic configurations of their atoms ? Give two examples to support your answer.

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OSWAL PUBLICATION-DIKSHA QUESTIONS -PERIODIC CLASSIFICATION OF ELEMENTS (LONG ANSWER)
  1. Atoms of eight elements A, B, D, E, F, G and H have the same number of...

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  2. Atoms of eight elements A, B, D, E, F, G and H have the same number of...

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  3. Why do we classify elements?

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  4. What were the criteria used by Mendeléev in creating his Periodic Tabl...

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  5. Why did Mendeleev leave some gaps in his Periodic Table?

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  6. In Mendeleev's periodic table, why were noble gases like helium, neon ...

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  7. Would you place the two isotopes of chlorine, Cl-35 and Cl-37 in diffe...

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  8. The Modern periodic table has been evolved through the early attempts ...

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  9. State Modern periodic law.

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  10. Name the scientist who first of all showed that atomic number of an el...

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  11. Two elements X and Y have atomic numbers 19 and 17 respectively. Give ...

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  12. How does the atomic radius change as we go: (i) from left to right ...

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  13. Two elements X and Y have atomic numbers 12 and I 6 respectively. Writ...

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  14. An element placed in Group 14 and 2nd period of the Periodic Table, bu...

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  15. An element placed in Group 14 and 2nd period of the Periodic Table, bu...

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  16. An element placed in Group 14 and 2nd period of the Periodic Table, bu...

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  17. Priya took an element X which is a yellow solid at room temperature an...

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  18. Priya took an element X which is a yellow solid at room temperature an...

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  19. Priya took an element X which is a yellow solid at room temperature an...

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  20. Priya took an element X which is a yellow solid at room temperature an...

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