The rule that is violated in the configuration of 1s2 2s2 2px2 is the Hund's Rule. Hund's rule states that all electrons do not want to be with each other.
Zero
a maximum of 2 electron can be carried by s so it will be 1s2 2s2 2p6 3s2 3p6
O2- would have the electron configuration of 1s2 2s2 2p6 Because the Oxygen has a charge of 2-, that means it has two more electrons than normal. So you do the electron configuration normally, then add two electrons! =]
The investigator will find that 1s2 2s2 2p6 is the electron configuration for neon.
Lithium electron configuration: 1s2 2s1, or in shorthand: [He] 2s1 Thus in LiF the Li cation (Li missing one electron to get its nobel gas configuration of He) it is Li+: 1s2 2s0, or in shorthand: [He] 2s0, This ion does NOT have 8 (octet) electrons, although it has a nobel gas configuration of He: 1s2.
Zero
a maximum of 2 electron can be carried by s so it will be 1s2 2s2 2p6 3s2 3p6
gotchu bitxk
1s2, 2s2, 2px2, 2py2, 2pz2, 3s2, 3px2, 3py2, 3pz2, 3dxy2, 3dyz2, 3dxz2, 3dxx2-yy2,3dzz2, 4s2
O2- would have the electron configuration of 1s2 2s2 2p6 Because the Oxygen has a charge of 2-, that means it has two more electrons than normal. So you do the electron configuration normally, then add two electrons! =]
there is no shorthand configuration for helium. its electron configuration is 1s2
The investigator will find that 1s2 2s2 2p6 is the electron configuration for neon.
Lithium electron configuration: 1s2 2s1, or in shorthand: [He] 2s1 Thus in LiF the Li cation (Li missing one electron to get its nobel gas configuration of He) it is Li+: 1s2 2s0, or in shorthand: [He] 2s0, This ion does NOT have 8 (octet) electrons, although it has a nobel gas configuration of He: 1s2.
It is the rule for filling of electrons in orbitals. It states that, When orbitals of equal energy (such as px, py, pz) are available electrons, they fill orbitals singly to keep the spin parallel. For example, N(Z=7)= 1s2, 2s2, 2px2, 2py1 (wrong) N(Z=7)= 1s2, 2s2, 2px1, 2py1, 2pz1 (correct)
Lithium (Li) has the electron configuration 1s2 2s1.
Helium has the electron configuration 1s2
Krypton, Kr, has an electron configuration of:1s2 2s2 2p63s2 3p6 3d104s2 4p6or, abbreviated:[Ar] 3d10 4s24p6