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how many covalent bonds does selenium form

how many covalent bonds does selenium form

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Selenium is an element that belongs to the fourth period/row of the periodic table. The atomic number of Selenium is 34. The electron configuration of Selenium is 2-8-18-6. You can see the configuration in image below.

Since it is has 6 electrons in the outermost shell, it allows Selenium to show variable valancy. Generally, there are three valencies are shown ny Selenium. These are -2, +4, +6. So, we can say that Selenium has variable number of covalent bonds depending upon the valence state. It will have 2 covalent bonds if it is in -2 state.

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