Advertisements
Advertisements
Question
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:
Options
Goes up and then down
Decreases and then increases
Increases
Decreases
Advertisements
Solution
Increases
APPEARS IN
RELATED QUESTIONS
Draw an electron dot diagram to show the formation of the following compound:
Methane
[H = 1, C = 6]
Give one word or a phrase:
The energy released when an electron is added to a neutral gaseous isolated atom to form a negatively charged ion.
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 ?
Explain the following:
Halogens have a high electron affinity.
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 B is Zero.
Fill in the blank
The nature of oxide Al2O3 is ____
State whether the following statement is true or false
Al2O3 is an amphoteric oxide.
Arrange the following as per instruction given in the bracket.
Cl, F, Br, I (increasing electron affinity)
