Cobalt is a transition metal. It is shiny and conducts electricity. It is magnetic. It is a hard metal. It is moderately reactive. Iron is more reactive and copper is less reactive. It dissolves slowly in acids. This reaction makes hydrogen and a salt of cobalt. Cobalt is normally in its +2 oxidation state as an ion. Some chemical compounds contain cobalt ions in its +4 oxidation state. Cobalt(II) chloride is one of the most common cobalt compounds. Many cobalt compounds are blue or pink. One of them is black.
k oʊ b ɔ l t WORD_BOUNDARY ɪ z WORD_BOUNDARY ʌ WORD_BOUNDARY t ɹ æ n s ɪ ʃ ə n WORD_BOUNDARY m ɛ t ə l WORD_BOUNDARY ɪ t WORD_BOUNDARY ɪ z WORD_BOUNDARY ʃ aɪ n i WORD_BOUNDARY æ n d WORD_BOUNDARY k ɑ n d ʌ k t s WORD_BOUNDARY ɪ l ɛ k t ɹ ɪ s ɪ t i WORD_BOUNDARY ɪ t WORD_BOUNDARY ɪ z WORD_BOUNDARY m æ ɡ n ɛ t ɪ k WORD_BOUNDARY ɪ t WORD_BOUNDARY ɪ z WORD_BOUNDARY ʌ WORD_BOUNDARY h ɑ ɹ d WORD_BOUNDARY m ɛ t ə l WORD_BOUNDARY ɪ t WORD_BOUNDARY ɪ z WORD_BOUNDARY m ɑ d ə ɹ ɹ ə t l i WORD_BOUNDARY ɹ ɪ æ k t ɪ v WORD_BOUNDARY aɪ ə ɹ n WORD_BOUNDARY ɪ z WORD_BOUNDARY m ɔ ɹ WORD_BOUNDARY ɹ ɪ æ k t ɪ v WORD_BOUNDARY æ n d WORD_BOUNDARY k ɑ p ə ɹ ɹ WORD_BOUNDARY ɪ z WORD_BOUNDARY l ɛ s WORD_BOUNDARY ɹ ɪ æ k t ɪ v WORD_BOUNDARY ɪ t WORD_BOUNDARY d ɪ s ɑ l v z WORD_BOUNDARY s l oʊ l i WORD_BOUNDARY ɪ n WORD_BOUNDARY æ s ɪ d z WORD_BOUNDARY ð ɪ s WORD_BOUNDARY ɹ ɪ æ k ʃ ə n WORD_BOUNDARY m eɪ k s WORD_BOUNDARY h aɪ d ɹ ə d̠ʒ ə n WORD_BOUNDARY æ n d WORD_BOUNDARY ʌ WORD_BOUNDARY s ɔ l t WORD_BOUNDARY ʌ v WORD_BOUNDARY k oʊ b ɔ l t WORD_BOUNDARY k oʊ b ɔ l t WORD_BOUNDARY ɪ z WORD_BOUNDARY n ɔ ɹ m ə l i WORD_BOUNDARY ɪ n WORD_BOUNDARY ɪ t s WORD_BOUNDARY p l ʌ s WORD_BOUNDARY t uː WORD_BOUNDARY ɑ k s ɪ d eɪ ʃ ə n WORD_BOUNDARY s t eɪ t WORD_BOUNDARY æ z WORD_BOUNDARY ʌ n WORD_BOUNDARY aɪ ɑ n WORD_BOUNDARY s ʌ m WORD_BOUNDARY k ɛ m ɪ k ə l WORD_BOUNDARY k ɑ m p aʊ n d z WORD_BOUNDARY k ə n t eɪ n WORD_BOUNDARY k oʊ b ɔ l t WORD_BOUNDARY aɪ ɑ n z WORD_BOUNDARY ɪ n WORD_BOUNDARY ɪ t s WORD_BOUNDARY p l ʌ s WORD_BOUNDARY f ɔ ɹ WORD_BOUNDARY ɑ k s ɪ d eɪ ʃ ə n WORD_BOUNDARY s t eɪ t WORD_BOUNDARY k oʊ b ɔ l t WORD_BOUNDARY ɹ oʊ m ə n WORD_BOUNDARY t uː WORD_BOUNDARY k l ɔ ɹ aɪ d WORD_BOUNDARY ɪ z WORD_BOUNDARY w ʌ n WORD_BOUNDARY ʌ v ð ə WORD_BOUNDARY m oʊ s t WORD_BOUNDARY k ɑ m ə n WORD_BOUNDARY k oʊ b ɔ l t WORD_BOUNDARY k ɑ m p aʊ n d z WORD_BOUNDARY m ɛ n i WORD_BOUNDARY k oʊ b ɔ l t WORD_BOUNDARY k ɑ m p aʊ n d z WORD_BOUNDARY ɑ ɹ WORD_BOUNDARY b l uː WORD_BOUNDARY ɔ ɹ WORD_BOUNDARY p ɪ ŋ k WORD_BOUNDARY w ʌ n WORD_BOUNDARY ʌ v WORD_BOUNDARY ð ɛ m WORD_BOUNDARY ɪ z WORD_BOUNDARY b l æ k WORD_BOUNDARY