How many orbitals are completely filled in an atom of an element whose atomic number is 22? HELP!
2007-10-16 08:20:54 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
The answer is 10.
You can reason this one out without finding the electron configuration. An orbital can accomodate 2 and only 2 electrons. Element 22 is Titanium, which has 4 valence electrons. However, of these four, only 2 are paired into an orbital (the 4s orbital). The other two are unpaired into the free 3d orbitals. That's 1 filled orbital so far. The remaining 18 core electrons are by necessity paired into orbitals, for an additional 9. Therefore, a neutral atom of element 22 has 10 orbitals that are completely filled.
2007-10-16 08:31:29 · answer #1 · answered by mnrlboy 5 · 0⤊ 0⤋
If the atomic number is 22, the 1s, 2s,2p, 3s and 3p orbitals are full. So is the 4s. However, the next orbitals to fill are the 3d, and of its 5 sub-orbitals, 3 will be totally empty and 2 will be half-empty.
2007-10-16 08:29:18 · answer #2 · answered by cattbarf 7 · 0⤊ 0⤋
6
2007-10-16 08:33:04 · answer #3 · answered by princeprakash1987 2 · 0⤊ 1⤋
Argon has the atomic number 18. It is a noble gas which means it has a filled outer energy level. That explains its unreactivity. There are 6 electrons in its outer energy level which is 3p.
2016-04-09 07:59:29 · answer #4 · answered by Anonymous · 0⤊ 0⤋
6 orbitals
2007-10-16 08:24:20 · answer #5 · answered by Anonymous · 0⤊ 1⤋