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प्रश्न
Arrange the elements of second period in increasing order of their electron affinity. Name the elements which do not follow the trend in this period.
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उत्तर
Lithium < Boron < Carbon < Oxygen < Fluorine
Neon, Nitrogen and Beryllium do not show negative values and hence do not follow the trend in this period.
संबंधित 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
Give one word or phrase for the following:
The amount of energy released when an atom in the gaseous state accepts an electron to form an anion.
The energy released when an electron is added to a neutral gaseous isolated atom to form a negatively charged iron.
Explain the following:
The reducing power of element increases down in the group while decreases in a period.
Which has higher E.A. fluorine or Neon?
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 element A is more than that that of element C.
With reference to the variation of properties in the Periodic Table, which of the following is generally true?
Electron affinity increases going down a group.
Choose the correct answer:
Among the period 2 elements the one which has high electron affinity is
The electron affinity of an element X is greater than that of element Y.
How is the oxidising power of X likely to compare with that of Y?
The electron affinity of an element X is greater than that of element Y.
How is the electronegativity of X likely to compare with that of Y?
