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प्रश्न
Choose the correct option
The number of valence electrons in O2- is :
विकल्प
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 ion of an element has 3 positive charges. The mass number of atom of this element is 27 and the number of neutrons is 14. What is the number of electrons in the ion?
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- Write the formula of the compound formed.
- Which nearest inert gas electronic configuration will element X and Y acquire.
- Show by orbital diagram the formation of the compound between X and Y.
In the formation of (i) oxygen molecule (ii) carbon tetrachloride molecule, state the following:
- Electronic configuration of nearest inert gas attained.
- How many electrons are shared/transferred in bond formation
- Which type of bonds these compounds form?
- Draw their orbital diagrams.
What are the noble gases?
On the basis of Thomson’s model of an atom, explain how the atom is neutral as a whole.
The number of electrons in an element X is 15 and the number of neutrons is 16. Which of the following is the correct representation of the element?
All non–metals will have ______ electrons in the outermost orbit of their atoms.
When an atom gains an electron it has more electrons and thus it carries a positive charge.
