Advertisements
Advertisements
प्रश्न
Choose the correct option
The number of valence electrons in O2- is :
पर्याय
6
8
10
4
उत्तर
6
APPEARS IN
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.
How does an electron differ from a neutron?
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?
The atom of an element X has 7 electrons in its M shell.
Is it a metal or a non-metal?
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?
What are inert elements?
Choose the correct option:
The mass number of an atom whose unipositive ion has 10 electrons and 12 neutrons is :
Name or state the following:
A bond formed by transfer of electron(s)
Name or state the following:
Ion formed by the gain of an electron(s)
Assertion: Helium has four electrons in the outermost orbit.
Reason: Neon has eight electrons in the outermost orbit.
