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Mendeleev's predicted the existence of c...

Mendeleev's predicted the existence of certain elements not known at that time and named two of them as Eka-silicon and Eka-aluminium.
Mention the group and the period of these elements in the Modem Periodic Table.

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To answer the question regarding Mendeleev's predicted elements Eka-silicon and Eka-aluminium, we need to identify their corresponding groups and periods in the modern periodic table. ### Step-by-Step Solution: 1. **Identify Eka-silicon and Eka-aluminium**: - Mendeleev predicted Eka-silicon and Eka-aluminium as elements that would fit into the periodic table based on the properties of known elements. 2. **Determine the modern equivalents**: ...
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Read the passage and answer the following questions. Mendeleev was a Russian chemist, who contributed the most for the development of periodic table of elements wherein the elements were arranged on the basis of their fundamental property, the atomic mass and also on the similarity of chemical properties. Only 63 elements were known at his time. He arranged the 63 elements in the increasing order of the.ir atomic masses and found that there was a periodic recurrence of elements with similar physical and chemical properties. He observed that elements with similar properties fall in the same vertical column. These vertical columns are called groups and horizontal rows of elements are called periods. Mendeleev predicted the existence of certain elements not known at that time and named two of them as Eka-silicon and Eka-aluminium. Mention the group and the period of these elements in the modern periodic table.

Mendeleev's predicted the existence of certain elements not known at that time and named two of them as Eka-silicon and Eka-aluminium. Name the elements which have taken the place of these elements.

Mendeleev's predicted the existence of certain elements not known at that time and named two of them as Eka-silicon and Eka-aluminium. How many valence electrons are present in each one of them?

Mendeleev predicted the existence of certain elements not known at that time and named two of them as Eka-Silicon and Eka-aluminium (a) Name the elements which have taken the place of these elements (b) Mention the group and the period of these electron in the modern periodic table (c) Classify these elements as metals, non-metals or metalloids (d) How many valence electrons are present in each one of them ?

Mendeleev's predicted the existence of certain elements not known at that time and named two of them as Eka-silicon and Eka-aluminium. Classify these elements as metals, non-metals or metalloids.

Read the passage and answer the following questions. Mendeleev was a Russian chemist, who contributed the most for the development of periodic table of elements wherein the elements were arranged on the basis of their fundamental property, the atomic mass and also on the similarity of chemical properties. Only 63 elements were known at his time. He arranged the 63 elements in the increasing order of the.ir atomic masses and found that there was a periodic recurrence of elements with similar physical and chemical properties. He observed that elements with similar properties fall in the same vertical column. These vertical columns are called groups and horizontal rows of elements are called periods. Mendeleev predicted the existence of certain elements not known at that time and named two of them as Eka-silicon and Eka-aluminium. Name the elements which have taken the place of these elements.

Mendeleev was a Russian chemist, who contributed the most for the development of periodic table of elements wherein the elements were arranged on the basis of their fundamental property, the atomic mass and also on the similarity of chemical properties. Only 63 elements were known at his time. He arranged the 63 elements in the increasing order of their atomic masses and found that there was a periodic recurrence of elements with similar physical and chemical properties, He observed that elements with similar properties fall in the same vertical column. These vertical columns are called groups and horizontal rows of elements are called periods. Mendeleev predicted the existence of certain elements not known at that time and named two of them as Eka-silicon and Eka-aluminium. How do we classify these newly discovered elements (eka-aluminium and eka-silicon)?

OSWAL PUBLICATION-PERIODIC CLASSIFICATION OF ELEMENTS -NCERT EXEMPLAR (LONG ANSWER QUESTIONS)
  1. Arrange them in the order of their group also.

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  2. Mendeleev's predicted the existence of certain elements not known at t...

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  3. Mendeleev's predicted the existence of certain elements not known at t...

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  4. Mendeleev's predicted the existence of certain elements not known at t...

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  5. Mendeleev's predicted the existence of certain elements not known at t...

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  6. (a) Electropositive nature of the element(s) increases down the group ...

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  7. (a) Electropositive nature of the element(s) increases down the group ...

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  8. (a) Electropositive nature of the element(s) increases down the group ...

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  9. (a) Electropositive nature of the element(s) increases down the group ...

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  10. (a) Electropositive nature of the element(s) increases down the group ...

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  11. An element X which is a yellow solid at room temperature shows catenat...

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  12. An element X which is a yellow solid at room temperature shows catenat...

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  13. An element X which is a yellow solid at room temperature shows catenat...

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  14. An element X which is a yellow solid at room temperature shows catenat...

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  15. An element X which is a yellow solid at room temperature shows catenat...

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  16. An element X of group 15 exists as diatomic molecule and combines with...

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  17. An element X of group 15 exists as diatomic molecule and combines with...

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  18. An element X of group 15 exists as diatomic molecule and combines with...

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  19. Which group of elements could be placed in mendeleev's periodic table ...

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  20. Give an account of the process adopted by Mendeleev for the classifica...

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