Advertisements
Advertisements
प्रश्न
Explain the rule according to which electrons are filled in various energy levels.
Advertisements
उत्तर
- The maximum capacity of a shell to accommodate electrons is given by the general formula 2n2, where n is the serial number of a shell.
- The maximum number of electrons possible in the outermost shell is 8 and that in the penultimate shell is 18.
- It is not necessary for an orbit to be completed before another is formed. In fact, a new orbit is formed when the outermost shell attains 8 electrons.
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.
Fill in the blank of the following statement :
Cathode rays are a beam of fast moving _________.
All the gases from cathode rays and anode rays when electricity is passed through them :What does the formation of cathode rays tell us about the atoms?
How does an electron differ from a neutron?
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 is the relation between the number of protons and the number of electrons in an atom?
Explain in brief the experimental proof which led to the discovery of –
Electrons
The relative charge of an electron is – 1.
An atom has a number of orbits and each orbit has protons.
Assertion: Helium has four electrons in the outermost orbit.
Reason: Neon has eight electrons in the outermost orbit.
