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An element M has an atomic mass 19 and a...

An element `M` has an atomic mass 19 and atomic number 9. Its ion is represented by

A

`M^(+)`

B

`M^(-)`

C

`M^(2+)`

D

`M^(2-)`

Text Solution

Verified by Experts

The correct Answer is:
B
`M^(-)` After gaining and `e^(-)` the metal attains stable configuration.
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An element M has atomic mass 19 and atomic number 9 . Its ion is represented as

An element M has an atomic number 9 and atomic mass 19. Its ion will be represented by (1) M (2) M^(2+) (3) M^(-) (4) M^(2-)

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A2Z-CLASSIFICATION OF ELEMENTS AND PERIODICITY OF PROPERTIES-Section D - Chapter End Test
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  2. Which of the following statement is correct with respect to the proper...

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  3. The pair of amphoteric hydroxides is

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  4. Which of the following oxides is amphoteric is nature ?

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  5. Which has the highest melting point?

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  6. In which of the following arrangements , the order is not correct acco...

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  7. Which one of the following arrangements represents the correct order o...

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  8. What will be the order of first ionisation energy?

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  9. which of the following configurations represents atoms of the elements...

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  10. The first ionisation potential in electron volts of nitrogen and oxyge...

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  11. The elements which occupy the peaks of ionisation energy curve are

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  12. Which is the correct order of ionic sizes (At, No : Ce=58,Sn=50,Yb=70 ...

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  13. A sudden large jump between the values of second and third ionisation ...

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  14. Which element having the following electronic configuration has minimu...

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  15. Arrange F,Cl,O,N in the decreasing order of electronegativy

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  16. Two elements whose electronegativities are 1.2 and 3.0 the bond formed...

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  17. Among Al(2)O,SiO(2),P(2)O(3) and So(2) the correct order of acid stren...

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  18. The order in which the following oxides are arranged according to decr...

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  19. Be and Al exhibit many properties which are similar. But the two eleme...

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  20. The order of magnitude of ionic radii of ions Na^(+),Mh^(2+),Al^(3+) a...

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  21. The order of the magnitude of first ionisation potentials of Be,B,N an...

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