00:01
Hello, in this question we have to find out the i thought of atomic number, mass number of protons, number of neutrons, number of electrons and chemical symbols.
00:12
In the case of potassium 37, its atomic number is found to be 90 and mass number is already given in the question that is 37.
00:20
Atomic number is equal to the number of protons and number of electrons so it will be 19 and 19 here and number of neutrons means at a number of electrons atomic mass minus atomic number.
00:33
So it is found to be 18 here.
00:35
And the chemical symbol for potassium is k.
00:38
And at top we write it atomic mass that is 37.
00:41
At bottom we write it atomic number 90.
00:45
And next in the case of p 3015, its mass number is 30.
00:52
It is given in the question...