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प्रश्न
Choose the correct option
The number of valence electrons in O2- is :
पर्याय
6
8
10
4
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उत्तर
6
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संबंधित प्रश्न
State whether the following statement is true or false :
The cathode rays obtained from all the gases consist of negatively charged particles called electrons.
The atom of an element X has 7 electrons in its M shell.
What type of ion will be formed by an atom of element X? Write the symbol of the ion formed.
What could element X be?
Choose the correct option:
The mass number of an atom whose unipositive ion has 10 electrons and 12 neutrons is :
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?
What are the noble gases?
Differentiate between the following term:
Electron and proton
Cathode rays are made up of
_______ is a negatively charged particle.
Anode rays travel in straight lines.
Assertion: Helium has four electrons in the outermost orbit.
Reason: Neon has eight electrons in the outermost orbit.
