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Question
Down the group, electron affinity ______.
Options
increases
decreases
remains same
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Solution
Down the group, electron affinity decreases.
RELATED QUESTIONS
Element X is a metal with a valency 2, Y is 3 non- metal with a valency 3.
1) Write an equation to show how Y from an ion.
2) If Y is a diatomic gas, write an equation for the direct combination of X and Y to form a compound.
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
Define the term ‘electron affinity’.
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.
An element in period 3 whose electron affinity is zero.
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 of element C.
- lonization energy of element C is less than that of element A.
- Electron affinity of B is zero.
The changes in the properties of elements on moving from left to right across a period of the Periodic Table. For the property, choose the correct answer.
The electron affinity of elements in groups 1 to 7:
In a period, increase in electron affinity increases ______.
Neon shows zero electron affinity due to ______.
State electron affinity unit.
