Identify the element

Electron Configuration

Element

a$)1s^{2}2s^{2}2p^{6}3s^1$

b$)1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^3$

c$)1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{10}4p^6$

d$)1s^2$

$5.$ What is wrong with the electron configurations$/$energy level diagrams below? Fill in the table.

$\backslash$table$[[$Electron Configuration$/$Energy Level Diagram,Problem$],[$a$)$ uarrdarrdarrdarrdarrdarr,$4],[1s,2s*2p,],[$b$)1s^{2}2s^{2}2p^{6}3p^4,],[$c$)\frac{\text{u}\text{a}\text{r}\text{r}\text{d}\text{a}\text{r}\text{r}}{2s}\frac{\text{u}\text{a}\text{r}\text{r}\text{d}\text{a}\text{r}\text{r}}{2p}\frac{\text{u}\text{a}\text{r}\text{r}\text{d}\text{a}\text{r}\text{r}\text{u}\text{a}\text{r}\text{r}\text{d}\text{a}\text{r}\text{r}\text{u}\text{a}\text{r}\text{r}\text{d}\text{a}\text{r}\text{r}}{3s}\frac{\text{u}\text{a}\text{r}\text{r}\text{u}\text{a}\text{r}\text{r}}{3p}$tuarrdarruarrdarruarr,.$],[$d$)1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}3d^{10},]]$