Consultați sistemul periodic și aranjați în ordinea creșterii caracterului nemetalic următoarele elemente: a) P, F, Cl b) S, Se, O c) Se, As, Br d) S, P, F

Elements that do not have full outer electron shells will donate, share, or take electrons from other atoms. choose the items that have the correct binary ionic formula.

In the following table, all the columns for the element calcium are filled out correctly. element electron structure of atom electron structure of ion net ionic charge calcium 1s22s22p63s23p64s2 1s32s22p63s23p64s1 +1 true false

Can someone me with 3 and 4 plz. this is for masteries test.