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An atom of an element has electronic con...

An atom of an element has electronic configuration 2,8,1. Which of the following statement is correct ?

A

The element's valency is 7

B

The element exists as a diatomic molecule

C

The element is of non-metallic nature

D

The element forms a basic oxide

Text Solution

Verified by Experts

The correct Answer is:
D
Elements of group 1 forms basic oxide.
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ERRORLESS-CLASSFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES -NCERT BASED QUESTIONS (Atomic and Ionic Radii)
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  2. Consider the isoelectronic species, Na^(+),Mg^(2+),F^(-) and O^(2-). T...

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  3. The ionic radii (A^@)of C^(-4) and O^(-2) are 2.60 and 1.40 respective...

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  4. The ionic conductance of following cation in a given concentration are...

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  5. The correct order of increasing radii of the ions Br^(-), F^(-), O^(2-...

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  6. Increasing order of ionic size : N^(3-),Na^(+),F^(-),O^(2-),Mg^(2+)

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  7. Which of the following sets will have highest hydration energy and hig...

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  8. Which of the following has the smallest size

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  9. Which one is the correct order of the size of the iodine species ? A)...

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  10. Which statement is correct

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  11. Which one of the following should be most stable

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  12. Smallest among these species is

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  13. An atom of an element has electronic configuration 2,8,1. Which of the...

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  14. The trivalent ion having size in lanthanide series is

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  15. The atomic radii of the elements across the second period of the perio...

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  16. Among the following, the most basic oxide is-

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  17. Among the following, the set of isoelectronic ions is

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  18. The isoelectronic pairs is :

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  19. Mendeleev's periodic law states that the properties of element a...

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  20. Among the elements Li, N ,C and Be one with the largest atomic radius ...

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