In an atom number of protons and neutrons are added to obtain:
(b)
If proton number is 19, electron configuration will be:
If the proton number is 19, the electron configuration would be 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ OR 1S² =2 2s² 2p6=8 3s² 3p6=8 4s¹ =1
If nucleon number of potassium is 39 and its atomic number is 19 then, number of neutrons will be:
To find the number of neutrons in an atom, you subtract the atomic number from the nucleon number. For potassium:
- Nucleon number = 39
- Atomic number = 19
- Number of neutrons = Nucleon number - Atomic number
Number of neutrons = 39 - 19
Number of neutrons = 20
ORn = A-Z
n = 39 - 19
n = 20
So, potassium has 20 neutrons
The isotope C-12 is present in abundance of:
(c)
Electronic configuration is distribution of:
(c)
Which one of the following is most penetrating?
(d)
How many subshells in a L shell:
(b)
De Broglie extend the wave particle duality to electron in:
(b)
Name the material of screen which is used in Rutherford atomic model:
(b)
Which rays are used for sterilization of medical instruments:
(c)