A selenium atom (Se) would form its most
stable ion by the
1. loss of 2 electrons.
2. gain of 1 electron.
3. loss of 1 electron.
4. loss of 7 electrons.
5. gain of 2 electrons.

Help please and tell me how you got the answer. Thanks!

  1. 👍
  2. 👎
  3. 👁
  1. Se (atomic number 34) is in group 16 (or VIA depending upon the system your prof is using). Therefore, it needs two electrons to make 18 which is the next higher noble gas element of Kr(atomic number 36). Adding two electrons will make it a -2 charge.

    1. 👍
    2. 👎
  2. Loss of 2 electrons

    1. 👍
    2. 👎
  3. so what is the answer to the question

    1. 👍
    2. 👎
  4. Selenium has the symbol Se2-, this means that selenium has

    1. 👍
    2. 👎
  5. How many electrons to lose in selenium

    1. 👍
    2. 👎
  6. How many electrons to lose in Argon

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chem - Elements

    I need help on identifying four elements. 1. a member of the same family as oxygen whose most stable ion contains 54 electrons. (Sulfur?) 2. member of alkali metal family whose most stable ion contains 36 electrons. (Cesium??) 3.

  2. Chemistry

    Which has a larger radius, the oxygen atom (O) or oxygen ion (O-2) ? Explain. Isn't the ion bigger because negative ions are bigger than atom's radius. im not sure though.

  3. Chemistry

    1) What is the charge on the ion that Selenium forms in an ionic compound? I am not sure about this. 2) What noble gas is isoelectronic with this ion. I was thinking Krypton because it is a noble gas and it is the closest to

  4. chrmistry

    In a chemical compound, would you expect an oxide ion to be joined with one atom of calcium or one atom of potassium? Why?

  1. Chemistry

    For each of the following, enter the number of covalent bonds that the atom can form: (A) One atom of carbon (B) One atom of sulfur (C) One atom of nitrogen with no net charge (D) One atom of nitrogen with positive net charge (E)

  2. oxidation

    In the reaction of hydrogen peroxide with iron (II) ion in acidic solution to form iron (III) ion and water, the oxidizing agent is... ? Fe(II) ==> Fe(III) H2O2 ==> H2O. Fe goes from +2 to +3, that is a loss of electrons, so it is

  3. Chem

    1.75 x 10^25 selenium atoms contains how many moles of selenium?

  4. Science--Help.

    Which of the following is NOT one of the eight most common elements in Earth’s continental crust? carbon silicon oxygen aluminum The most abundant element in Earth’s continental crust (by weight) is _____. 2. oxygen silicon

  1. chemistry

    draw a diagram showing the arrangement of the valency electrons in one molecule of the covalent compound selenium chloride. use x to represent an electron from an atom of selenium. use o to represent an electron from an atom of

  2. chem

    There are eight markers in a full set, but Flora and Frank each only have seven markers.Flora is missing the red marker, and Frank is missing the blue marker.What can they do so that each has a full set of markers? * steal the

  3. Chemistry

    I am having some chemistry problems. 3. The graph compares the 1s orbital energies for the F atom (Z = 9), the Ne+ ion (Z = 10), and the Na++ ion (Z = 11). (the graph shows F having an Orbital Energy of 692.45, Ne+ with 47.74, and

  4. Earth Science (check answers)

    1. The mass number of an atom is obtained by totaling the number of_____and____. a. electrons and protons b. electron and neutrons c.protons and neutrons d.neutrons and isotopes Is it B? 2. Which of the following statements about

You can view more similar questions or ask a new question.