What is the electronic configuration of the first row transition metals and their dications? Why is the configuration of $Cr^(2+)$ unusual?

Sodium $Na_11^23$ is so reactive that if sodium metal is placed in water it will react vigorously to produce Hydrogen gas and heat often causing an explosion. All of...

The conductivity of metals is due to the of these atoms. They generally have fewer than valence orbitals, so that empty orbitals in the valence shell exist. In a...

As you know, metallic results from the delocalization of electrons from the parent metal atom so that positive ions are conceived to swim in a sea of electrons. This view...

for discussion on atomic radii of the transition metals.

The effective nuclear charge ($Z_"eff"$) increases slightly along a transition series. This is because more protons are added in the nucleus, whereas the same number of electrons is added in...

accounts for the physical properties of metals: malleability; ductility; electrical and thermal conductivity; lustre. Some metals have more to contribute to the metallic network. The alkali metals...

And for this process we use the , $1/lambda_("vacuum")=R{1/(1/n_1^2-1/n_2^2)}$,......... ......where $R="the Rydberg constant,"$ $1.097 xx 10^7 *m^(−1);$ $n_1=2, n_2=5$........ $1/lambda_("vacuum")=1.097xx10^7*m^-1{1/(1/2^2-1/5^2)}$ $1/lambda_("vacuum")=1.097xx10^7*m^-1{1/(1/4-1/25)}=52238095.2*m^-1$ And thus $lambda=8.90xx10^-8*m$, if I have done my...

In order to solve this question we will use the Bohr Model. The change in energy according to Bohr can be calculated by: $DeltaE=-2.178xx10^(-18)Z^(2)J(1/(n_("final")^2)-1/(n_("initial")^2))$ Here, the initial level is $n_("initial")=1$...

Chromium. Is it also the most paramagnetic? Why or why not? The only candidates would be , i.e. the ones with close to five $3d$ electrons ($"Cr", "Mn", "Fe"$)....

For the full electronic configuration of calcium, $Z=20$, I could write out........ $1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(2)$..... But of course this a portmanteau of the LAST Noble gas, $"argon,"$ $Z=18$, whose electronic configuration is...