Atoms are said to be completely filled when all the available shells are completely filled with electrons. Which of the following elements has completely filled outermost shell in its atoms?
Atoms are said to be completely filled when all the available shells are completely filled with electrons. Which of the following elements has completely filled outermost shell in its atoms?
The correct option is D None of these.
The formula to find the maximum number of electrons that can be accommodated in a shell = 2n2 where ‘n’ is the number of the given shell from the nucleus.
For example, the maximum number of electrons that can be filled in the:
First shell (K - Shell) = 2 (1)2 = 2 electrons.
Second shell (L - Shell) = 2(2)2 = 8 electrons.
Third shell (M - Shell) = 2(3)2 = 18 electrons.
So the atomic numbers of the elements with completely filled outermost shells will be- 2, 10 (2 + 8), 28 (2 + 8 + 18). Nickel has the atomic number 28, thus nickel is a fully filled element.
That's why even though Argon is a noble gas it still has an incompletely filled outermost orbit.
The formula to find the maximum number of electrons that can be accommodated in a shell = 2n2 where ‘n’ is the number of the given shell from the nucleus.
For example, the maximum number of electrons that can be filled in the:
First shell (K - Shell) = 2 (1)2 = 2 electrons.
Second shell (L - Shell) = 2(2)2 = 8 electrons.
Third shell (M - Shell) = 2(3)2 = 18 electrons.
So the atomic numbers of the elements with completely filled outermost shells will be- 2, 10 (2 + 8), 28 (2 + 8 + 18). Nickel has the atomic number 28, thus nickel is a fully filled element.
That's why even though Argon is a noble gas it still has an incompletely filled outermost orbit.
