Advertisements
Advertisements
प्रश्न
Define the term of the electron.
Advertisements
उत्तर
Electron [e]: “A sub-atomic particle having a unit negative charge and mass equal to 1/1837 of that of the hydrogen atom, revolve around the nucleus.” [−1e0]
APPEARS IN
संबंधित प्रश्न
Na+ has completely filled K and L shells. Explain.
Which one of the following is a correct electronic configuration of sodium?
Name the shell of an atom which can accommodate a maximum of :
(a) 2 electrons ?
(b) 18 electrons ?
What do you understand by the term "electronic configuration" of an element? Write down the electronic configuration of oxygen (At. No. = 8).
The correct electronic configuration of a chloride ion is :
Give scientific reason.
Atomic mass number is a whole number.
Explain the octet rule for the formation of –
Nitrogen molecule from two nitrogen atoms.
Give a reason for the following:
The shells surrounding the nucleus of an atom are also called ‘energy levels’.
Give a reason for the following:
Helium is chemical extremely unreactive.
For an atom ‘X’, K, L and M shells are completely filled. How many electrons will be present in it?
