Question

a distribuiçao eletronica do elemento quimico Ca (Z=20) PRESENTE na composiçao da agua mineral é

Answer 1

$1s^2$
$2s^2 \ 2p^6$
$3s^2 \ 3p^6 \ 3d^{10}$
$4s^2 \ 4p^6 \ 4d^{10} \ 4f^{14}$
$5s^2 \ 5p^6 \ 5d^{10} \ 5f^{14}$
$6s^2 \ 6p^6 \ 6d^{10}$
$7s^2 \ 7p^6$

$\text{Ca}_{20}: 1s^22s^22p^63s^23p^64s^2$

Answer 2

1s^2

2s^2 \ 2p^6

3s^2 \ 3p^6 \ 3d^{10}

4s^2 \ 4p^6 \ 4d^{10} \ 4f^{14}

5s^2 \ 5p^6 \ 5d^{10} \ 5f^{14}

6s^2 \ 6p^6 \ 6d^{10}

7s^2

Ca}_{20}: 1s^22s^22p^63s^23p^64s^2