Which elements are diatomic? 1 H 2 He 3 6 4 Be 5 B 7 N Ooo 9 F 10 Ne 14 Si 15 P. 16 S 17 CI 18 Ar 11 12 Na Mg 19 20 K Ca 13 AI 31 Ga 32 Ge 34 Se 35 Br 36 Kr 33 As 51 Sb 49 52 53 37 Rb 38 Sr 50 Sn In 54 Xe 9 Te 55 Cs 56 Ba 81 TI 82 Pb 83 Bi 84 Ро 85 At 86 Rn 87 Fr 88 Ra 113 Nh 114 FI 115 Mc 116 Lv 117 Ts 118 Og​

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.

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