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Beryllium has 4 electrons and is not isoelectronic with any noble gas. However Be2+ is isoelectronnic with helium.
Neon
neon
This gas is krypton.
neon
Element Be is not a noble gas it is an Alkaline Earth Metal, its full name is Beryllium
Beryllium has 4 electrons and is not isoelectronic with any noble gas. However Be2+ is isoelectronnic with helium.
[He] 2S2 is the noble gas electron configuration for beryllium.
Neon
neon
neon
This gas is krypton.
There are two possible 'noble gas' configurations:2 8 18 32 18 8 for Bi3-, or in shorthand configuration [Xe] 4f14, 5d10, 6s2 6p6and2 8 18 32 18 0 for Bi5+, or in shorthand configuration [Xe] 4f14, 5d10, 6s0 6p0Bismuth (as metaloid atom) in elemental notation: [Xe] 4f14, 5d10, 6s2 6p3
neon
No, Be is the first element in group 2 (atom number 4) and all noble gases are in group 18 (or formerly 8)
Beryllium: alkaline earths family Uranium: actinoids family Bromine: halogens family Argon: noble gas family
argon (atomic number 18) is the closest to calcium (atomic number 20)