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Se-2 ion or selenide ion is the most common.

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What is the composition and structure of selenium?

Selenium is a nonmetal element that belongs to the oxygen group of the periodic table. Its atomic number is 34, and it has multiple allotropes with different physical and chemical properties. Selenium exists in various forms, including elemental selenium, selenide ions, selenite ions, and selenate ions.


Why is selenium a poor conductor?

Selenium is a non metal, and non metals are poor conductors due to the lack of free electrons or ions.


How many ion atom are formed in selenium?

The oxidation states of selenium are: -2, +2, +4, +6.


What is the formula of the ionic compound with barium and selenium?

The formula of the ionic compound formed between barium and selenium is BaSe. Barium, which has a +2 charge as an alkaline earth metal, combines with selenium, which typically has a -2 charge as a chalcogen. The charges balance each other out, resulting in a 1:1 ratio of barium ions to selenium ions in the compound.


What bond is formed between calcium and selenium?

The bond formed between calcium and selenium is an ionic bond. Calcium, a metallic element, donates two electrons to achieve a stable electron configuration, while selenium, a non-metal, accepts those electrons to form negatively charged selenide ions. This transfer of electrons results in the formation of positively charged calcium ions and negatively charged selenium ions, which are held together by strong electrostatic forces.


What mon atomic ions do barium and selenium make?

An ionic compound, Barium selenide or BaSe is formed, with the ions Ba2+ and Se2-.


What type of bond is calcium and selenium?

Calcium and selenium typically form an ionic bond. Calcium, a metal, donates two electrons to achieve a stable electron configuration, while selenium, a non-metal, accepts these electrons to complete its valence shell. This electron transfer leads to the formation of positively charged calcium ions and negatively charged selenium ions, resulting in an electrostatic attraction between them.


Formula for ionic elements aluminum and selenium?

The ionic formula for aluminum is Al3+ and for selenium is Se2-. When these two ions combine, the formula for the resulting ionic compound is Al2Se3.


What ions will the elements form?

Rubidium 1+ Barium 2+ Chlorine 1- Selenium 2- Francium 1+


What period four element forms ions with the oxidation number -2?

Selenium forms selnides which contain the ion Se2-.


What is the excited state selenium?

Excited state selenium refers to selenium atoms or ions that have absorbed energy, causing their electrons to move to higher energy levels. This temporary configuration is unstable, and the electrons will eventually return to their original energy levels, releasing the absorbed energy as light. This process is the basis for selenium's use in photovoltaic cells and other light-sensitive technologies.


What is the formula for rubidium selenate?

The chemical formula for rubidium selenate is Rb2SeO4. It consists of two rubidium (Rb) ions, one selenium (Se) ion, and four oxide (O) ions.