viết cấu hình electron nguyên tử của các nguyên tố sau

a, N (Z=7)

b, F (Z=9)

c, P (Z=15)

d, Mg (Z=12)

e, Al (Z=13)

f, K (Z=19)

g, Ca (Z=20)

h, Fe (Z=26)

i, Cr (Z=24)

k, Zn (Z=30)

???

comfortable crossing. By half past nine, we were relaxing ourselves

Tìm lỗi sai: six o'clock but it was certainly worth making the effort to get up early. ->

In most lines of the following text, there is one necessary word which is either grammatically incorrect
or it does not fit in with the sense of the text. Find out and correct them.

Guernsey in just over the two hours. This seemed ->