Срочно!!!Четвертий зайвий ЧЗ-1

1. N, Ne, Na, He

2. Mg, Si, Pb, Fe

3. Ca, Mg, Zn, Be

4. F, Cl, Br, Ar

5. азот, неон, літій, кисень

6. ртуть, золото, залізо, алюміній​
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