[Kr]5s2
[Kr] 5s2
NO!!!! Each element has it own ground state electron configuration. Rubidium is [Kr] 5s1 Strontium is [Kr] 5s2. Notice that strontium has one MORE electron than Rubidium. The symbol [Kr] is shorthand for the full electron configuration of krypton.
there is no shorthand configuration for helium. its electron configuration is 1s2
[Rn]
The noble gas configuration for Sr (strontium) is [Kr]5s2
[Kr] 5s2
NO!!!! Each element has it own ground state electron configuration. Rubidium is [Kr] 5s1 Strontium is [Kr] 5s2. Notice that strontium has one MORE electron than Rubidium. The symbol [Kr] is shorthand for the full electron configuration of krypton.
there is no shorthand configuration for helium. its electron configuration is 1s2
The shorthand electron configuration of magnesium is [Ne]3s2.
The noble gas configuration of strontium is [Kr]5s2.
[Rn]
[He]2S1
The noble gas configuration for Sr (strontium) is [Kr]5s2
The electron configuration of strontium is 1s22s22p63s23p63d104s24p65s2.
Carbon has the chemical symbol of C and an atomic number of 6. Its shorthand or electron configuration is 1s2 2s2 2p2.
google it
It is [Ne] 3S2.