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Choose from the following : ""(4)Be, ""(...

Choose from the following : `""_(4)Be, ""_(9)F, ""_(19)K, ""_(20)Ca`
The element having one electron in its outermost shell

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To determine which of the given elements has one electron in its outermost shell, we need to analyze the electronic configurations of each element. Here’s a step-by-step solution: ### Step 1: Identify the Elements and Their Atomic Numbers The elements provided are: 1. Beryllium (Be) - Atomic Number 4 2. Fluorine (F) - Atomic Number 9 3. Potassium (K) - Atomic Number 19 4. Calcium (Ca) - Atomic Number 20 ...
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Given below are some elements of the modern periodic table : ""_(4)Be, ""_(9)F,""_(14)Si,""_(19)K,""_(20)Ca (i) Select the element that has one electron in the outermost shell and write its electronic configuration. (ii) Select two elements that belong to the same group. Give reason for your answer. (iii) Select two elements that belong to the same period. Which one of the two has bigger atomic size ?

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MTG IIT JEE FOUNDATION-PERIODIC CLASSIFICATION OF ELEMENTS-Exercise (Subjective Problems Very Short Answer Type)
  1. Properties of the elements are given below. Where would you locate the...

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  2. Properties of the elements are given below. Where would you locate the...

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  3. Properties of the elements are given below. Where would you locate the...

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  4. Properties of the elements are given below. Where would you locate the...

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  5. Properties of the elements are given below. Where would you locate the...

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  6. A metal M forms an oxide having the formula M(2)O(3). It belongs to 3r...

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  7. What property did Mendelev use to classify the elements in his perodic...

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  8. State the modern periodic law.

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  9. Name a species that will be isoelectronic with each of the following a...

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  10. Name a species that will be isoelectronic with each of the following a...

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  11. Name a species that will be isoelectronic with each of the following a...

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  12. Name a species that will be isoelectronic with each of the following a...

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  13. How do atomic sizes vary in a group and in a period? Give reason for t...

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  14. Arrange the following ions in the order of increasing size : Be^(2+),...

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  15. Select from each group the species which has the smallest radius stati...

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  16. Select from each group the species which has the smallest radius stati...

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  17. Select from each group the species which has the smallest radius stati...

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  18. Choose from the following : ""(4)Be, ""(9)F, ""(19)K, ""(20)Ca The e...

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  19. Choose from the following : ""(4)Be, ""(9)F, ""(19)K, ""(20)Ca Two e...

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  20. Consider the elements N, P, O and S and arrange them in order of incre...

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