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प्रश्न
Choose the correct option
The number of valence electrons in O2- is :
विकल्प
6
8
10
4
उत्तर
6
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संबंधित प्रश्न
What are cathode rays? How are these rays formed?
Name the sub-atomic particle whose charge is -1.
Explain the rule according to which electrons are filled in various energy levels.
Element X has electronic configurations 2, 8, 18, 8, 1. Without identifying X,
- Predict the sign and charge on a simple ion of X.
- Write if X will be an oxidizing agent or a reducing agent. Why?
Choose the correct answer from A, B, C and D:
When a metal atom becomes an ion:
The electronic configuration of nitrogen is (2, 5). How many electrons in the outer shell of a nitrogen atom are not involved in the formation of a nitrogen molecule?
Differentiate between the following term:
Electron and proton
Cathode rays are made up of
Helium has two electrons in the outermost orbit and so it is chemically inert.
Select the INCORRECT statement.
