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Argon
that is fluorin
yeah
That is the element phosphorous
1s2 2s22p6 3s23p63d10 4s24p64d5 5s2
1s2 2s2 2p6 3s2 3p1
3d11 is not possible, The element with the electron configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p4 is Selenium (Se).
Helium has the electron configuration 1s2
Iron is a 'd' block element with electronic config. 1s2 2s2 2p6 3s2 3p6 4s2 3d6. Iron tends to loose the outermost 4s2 electrons to form Fe2+ and later form Fe3+ quickly to attain 3d5 config. as per rule, a half filled d orbital will be more stable i.e. Fe3+. hence iron gets oxidised to Fe3+ easily. Example is the formation of rust. But, zinc is not considered purely a d block element. it has a 3d10 config. which gives inertness
Noble gas config: [Ne] 3s2, 3p5Electron config: 1s2, 2s2, 2p6, 3s2, 3p5
This element is chlorine (group 17).
Helium.
Lithium (Li) has the electron configuration 1s2 2s1.
only one proton means only one electron, therefore, electron config is 1 or 1s1 when acting as a non-metal in an ionic sustance H- has an electron config of 2 or 1s2
This element is chlorine (group 17).
Element 27 Cobalt.
This chemical element is neon (Ne).