1s22s22p5
The electron configuration for a ground-state potassium atom is 1s22s22p63s23p64s1. The noble gas shorthand configuration is [Ar]4s1.
A noble gas electron configuration involves representing an element's electron configuration by using the electron configuration of the nearest noble gas preceding it in the periodic table, followed by the remaining electron configuration for that element. For example, the noble gas electron configuration for sodium (Na) is [Ne] 3s¹, where [Ne] represents the electron configuration of neon leading up to sodium.
The electron configuration of sulfur is [Ne) 3s2.3p4.
The notation "Ne 3s2" seems to reference an electron configuration, but it appears to be a bit misleading. Neon (Ne) has the atomic number 10 and its electron configuration is 1s² 2s² 2p⁶. The "3s2" part suggests an electron configuration for a different element, specifically for magnesium (Mg), which has the configuration of 1s² 2s² 2p⁶ 3s² and an atomic number of 12.
The electron configuration Ar4s²3d¹⁰4p⁴ corresponds to the element selenium (Se), which has an atomic number of 34. In this configuration, the "Ar" represents the electron configuration of argon, and the subsequent electrons fill the 4s, 3d, and 4p orbitals. Selenium is a nonmetal and is part of group 16 in the periodic table.
Fluorine (F) is the most electronegative element because it has 5 electrons in it's 2p subshell. The optimal electron configuration of the 2p subshell has 6 electrons. Since F is close to this optimal configuration, electrons are highly attracted to the nucleus.
Electronegativity is, to some extent, a subjective value (though based on a composite of actually measurable physical properties). The highest electronegativity is usually assigned to fluorine. The electron configuration of fluorine's outermost shell is 2s2 2p5.
I suppose that you think to gallium.
The abbreviated electron configuration for argon is [Ne] 3s^2 3p^6. The [Ne] represents the electron configuration of the noble gas neon, which has the same electron configuration as the inner electrons of argon.
The element with this electron configuration is carbon (C). This electron configuration corresponds to 6 electrons, which is the atomic number of carbon.
The element with this electron configuration is manganese (Mn), which has 25 electrons.
Vanadium ( V) has that configuration. Its atomic number is 23.
The electron configuration for a ground-state potassium atom is 1s22s22p63s23p64s1. The noble gas shorthand configuration is [Ar]4s1.
Lithium (Li) has the electron configuration 1s2 2s1.
The electron configuration of phosphorus is [Ne]3s2.3p3.
A noble gas electron configuration involves representing an element's electron configuration by using the electron configuration of the nearest noble gas preceding it in the periodic table, followed by the remaining electron configuration for that element. For example, the noble gas electron configuration for sodium (Na) is [Ne] 3s¹, where [Ne] represents the electron configuration of neon leading up to sodium.
The element with the electron configuration 1s22s22p63s23p5 is fluorine (F).