Atomic number. This gives the count of protons in the nucleus and therefore the posiitive charge of the nucleus.
For an uncharged atom it therefore gives the total number of electrons in all shells
The chemical element with the atomic number 41 is niobium; the electron configuration is:[Kr]4d4.5s1.
He is the symbol given to Helium.It has atomic number 2.It is the noble gas with electronic configuration 1s2.
A species (element, cation or anion) should have eight valence electrons to have a noble gas electronic configuration. However element upto atomic number 4 may have 2 valence electrons and attain the electronic configuration of helium noble gas.
Sodium is atomic number 11 so it has 11 electrons. The electronic configuration would be 1s2 2s2 2p6 3s1.
- atomic number (number of protons)- electron configuration
The chemical element with the atomic number 41 is niobium; the electron configuration is:[Kr]4d4.5s1.
The electronic configuration of chlorine is 1s2, 2s2 2p6, 3s2 3p5.
Iodine is a non metal element. Atomic number of it is 53.
The element is Argon. Its configuration is 2 8 8.
Atomic number for sodium is 11. 2-8-1 is the electronic configuration of sodium.
The number of electrons on the external level is generally equivalent to valency.
The electronic configuration of bromine (atomic number 35) is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p5. This means that it has 35 electrons arranged in energy levels and sublevels according to the Aufbau principle.
Atoms of the element sodium (atomic number 11) have the electron configuration 1s22s22p63s1 with the noble gas form [Ne] 3s1
He is the symbol given to Helium.It has atomic number 2.It is the noble gas with electronic configuration 1s2.
[Ar]3d34s2 is the shorthand electron configuration for Vanadium (V).
A species (element, cation or anion) should have eight valence electrons to have a noble gas electronic configuration. However element upto atomic number 4 may have 2 valence electrons and attain the electronic configuration of helium noble gas.
The element calcium (atomic number 20) has the electron configuration 1s2 2s2 2p6 3s2 3p6 4s2 or in noble gas form : [Ar] 4s2