Predict how many electrons will most likely be gained or lost by each of the following elements.

(a) Se
Will it gain or lose electrons?
gain
lose

number of electrons

(b) Cl
Will it gain or lose electrons?
gain
lose

number of electrons

(c) Al
Will it gain or lose electrons?
gain
lose

number of electrons

(d) Ba
Will it gain or lose electrons?
gain
lose

number of electrons

How do you know if it will lose or gain electrons.

2 answers

You know the tendency from its position on the periodic table. Metals lose electrons.
Look at the periodic table.
If the element is in groups I, II, or III (or groups 1, 2, and 13 depending upon the system your prof is using), the element has an extra 1, 2, or 3 electrons in the outer shell and will lose 1, 2, or 3 electrons. If the element is in group V, VI, or VIII (or groups 15, 16, 17), it has 5, 6, or 7 electrons in the outer shell and will GAIN 3 electrons (to make 8 from 5), gain 2 electrons (to make 8 from 6) or gain 1 electron (to make 8 from 7).
Elements in group 0 (or 18) already have 8 electrons in their outer shell and they neither gain nor lose electrons. Group IV (group 14) elements have 4 electrons in their outer shell and usually neither gain nor lose; rather they almost always SHARE electrons to complete their outer shells.
Similar Questions
  1. Hi!Thanks for checking my question out! ____ 2. Which of the following takes place during a redox reaction? (1 point) a)
    1. answers icon 2 answers
  2. Which takes place during a redox reaction?Electrons are neither gained nor lost. Electrons are lost only. Electrons are gained
    1. answers icon 1 answer
    1. answers icon 6 answers
  3. What substance is oxidized in the reaction MgO + Cu → Mg + CuO?Mg, because it lost electrons Mg, because it gained electrons
    1. answers icon 1 answer
more similar questions