Bef2 Ionic Or Covalent (updated 2024-11-20)
Duration: 3:24
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139.5K views | 19 May 2013
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16.4K views | 16 Dec 2020
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419.1K views | 9 Apr 2018
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964.5K views | 15 Feb 2019
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239.3K views | 15 Dec 2017
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24.4K views | 6 Dec 2018
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3.6M views | 16 Jul 2013
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106.5K views | 17 Dec 2020
Duration: 11:30
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8.2K views | 4 Dec 2020