First question, why is the abbreviated electron configuration for neon [He] 2s2 2p6 and not just [Ne]? And is it the same for all elements group 8A?
Second question, In Group 7A, the first two elements are gases, the next one is liquid, and the fourth one is a solid.What do they have in common that causes them to be in the same group?
I think the answer is valence electrons. Is that right?
Last question, A valence electron in an atom of sulfur is excited by heating a sample. The electron jumps from the s orbital to the p orbital. What is the electron configuration of the excited sulfur atom, and what would would be the orbital diagram look like?
Thank you!
Second question, In Group 7A, the first two elements are gases, the next one is liquid, and the fourth one is a solid.What do they have in common that causes them to be in the same group?
I think the answer is valence electrons. Is that right?
Last question, A valence electron in an atom of sulfur is excited by heating a sample. The electron jumps from the s orbital to the p orbital. What is the electron configuration of the excited sulfur atom, and what would would be the orbital diagram look like?
Thank you!
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1) It is the convention chosen by IUPAC. For all the elements in period 2 it is the valence shell that is shown. The fact that the shell is filled at Ne does not change the convention. Although these electrons are difficult to remove in Ne, in later members of the group the electrons are progressively easier to remove.
2) You are correct, the outer shells each have the same configuration, namely ns2np5.
3) The configuration would be: [Ne]3s1 3p5. Im not sure which style of orbital diagram you are referring to. Since S
normally has 1 filled p orbitals and 2 half filled p orbitals their shape is like a 6 pronged jack used in the game "ball
and jacks". The fact that an orbital contains only one electron does not change its shape. Both the ground state S
and the excited state S have the same orbital shapes.
2) You are correct, the outer shells each have the same configuration, namely ns2np5.
3) The configuration would be: [Ne]3s1 3p5. Im not sure which style of orbital diagram you are referring to. Since S
normally has 1 filled p orbitals and 2 half filled p orbitals their shape is like a 6 pronged jack used in the game "ball
and jacks". The fact that an orbital contains only one electron does not change its shape. Both the ground state S
and the excited state S have the same orbital shapes.