Write the electronic configuration of calcium and potassium.​

Atomic number of potassium = 19

Therefore number of electrons = 19

Since, maximum number of electrons in outermost orbit will not be more than 8, thus the 19th electron of potassium atom will reside in 4th.

Thus, electronic configuration of potassium is

given in first pic.

Number of orbit in potassium = 4

Atomic number of calcium = 20

Therefore number of electrons = 20

Thus, electronic configuration of calcium is given in sec pic.

Number of orbit in calcium = 4

Explanation:

#keep learning!!

indium, and thallium have three electrons i think

it’s previous models   because when i picked that son of a gun’s answer it was wrong look for previous models because they might make it a different letter