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Which of the following electronic struct...

Which of the following electronic structure represents a metallic element ?

A

Option 1. 2,8,7

B

Option 2. 2,8,8

C

Option 3. 2,8,4

D

Option 4. 2,8,1

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The correct Answer is:
D
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AAKASH INSTITUTE ENGLISH-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-Assignment (Section -A)
  1. An element with atomic number 29 belongs to

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  2. In the periodic table from left to right in a period, the atomic volum...

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  3. Which of the following electronic structure represents a metallic elem...

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  4. The sceening effect of d-electrons is

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  5. Correct order of radii

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  6. Which pair of elements shows positive elecron gain enthalpy ?

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  7. The elements of same group of the periodic table have

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  8. Which pair of elements has same chemical properties ?

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  9. Write the atomic number of the element present in the third period and...

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  10. Chalcogens are elements of the group

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  11. Which of the following shows diagonal relationship ?

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  12. What are representative elements?

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  13. Which group of elements represents a collection of isoelectronic speci...

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  14. Which of the following electronic configuration represents the most me...

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  15. The group of elements in which the last electron is present the anti-p...

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  16. Which general electronic configuration of the element does not represe...

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  17. Find the incorrect statement.

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  18. The effective nuclear charge across the period (from left to right)

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  19. Which electronic configuration of an element has abnormally high diffe...

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  20. Which of the following has the highest negative electron gain entahlpy...

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