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प्रश्न
Choose the correct answer from the options given below:
If an element A belongs to Period 3 and Group II, then it will have
A. 3 shells and 2 valence electrons
B. 2 shells and 3 valence electrons
C. 3 shells and 3 valence electrons
D. 2 shells and 2 valence electrons
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उत्तर
3 shells and 2 valence electrons
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संबंधित प्रश्न
Draw an electron dot diagram to show the formation of each of the following compounds:
Magnesium Chloride
[H = 1, C = 6, Mg = 12, Cl = 17]
Electron affinity values generally _______ across the periods left to right and ______ down the group top to bottom.
Give reason:
Electron affinity of halogens is comparatively high ?
Arrange the elements of group 17 and group 1 according to the given conditions.
Increasing electron affinity
Arrange the elements of group 17 and group 1 according to the given conditions.
Increasing electron affinity
A, B, C are three elements in which B is an inert gas other than helium.With this information complete the following table.
| Element | Atomic number | No. of electrons in the valence shell | Group to which the element belongs |
| A | Z - 1 | ||
| B | Z | ||
| C | Z + 1 |
Also, explain the following : Electron affinity of B is Zero.
State whether the following statement is true or false
Al2O3 is an amphoteric oxide.
Choose the correct answer:
Among the period 2 elements the one which has high electron affinity is
Down the group, electron affinity ______.
Arrange the following as per instruction given in the bracket.
Cl, F, Br, I (increasing electron affinity)
