+coh3 ion

UNIDAD 3 PARTE 2

electron affinity. How much an atom wants to gain an electron. UP AND RIGHT. Electron affinity gets higher, which causes the atom to want to GAIN electrons. Fluorine has the highest, and francium has the lowest. 

No electron affinity: Noble gases. They have a full outer shell and do not need more electrons

ionization energy. The energy required to REMOVE  an electron from the valence shell of an atom . If it is easy to remove an electron, the energy will be low (like if an atom wants to lose its electrons). If it is hard to remove an electron, the energy will be high (like if an atom doesn't want to lose its electrons). UP AND RIGHT. Gets higher because your gaining electrons. Helium has the highest and francium has the lowest. 

   Higher noble gases 8 valence electrons.

lowest ionization energy.

The Alkali Metals (Group 1) The alkali metals have 1 valence electron. They want to lose this one electron so that they can have a full valence shell. Since they want to lose it, it won't be very hard to remove it. Since it will be easy to remove it, it won't require a lot of energy,so they have low ionization energy.

Explain how is it possible that Ionization Energy and Electron Affinity have the same trend

If an atom has high ionization energy, that means that it does NOT want to lose an electron. Most likely, if an atom doesn't want to lose an electron, it wants to gain one. Atoms that want to gain electrons have high electron affinity

electronegativity. The ability of an atom to hold onto its electrons tightly. UP RIGHT/ because the valence shell of electrons is closer to the nucleus so it easier for the atom to hold onto its electrons (the closer -the valence electrons are,the easier i t is to hold them)

   Highest Noble Gases becaue They don't want to lose electrons,and they don't want to gain electrons. Because of this, they are going to hold onto their 8 electrons VERY tightly so that nothing happens to them.

   Lowest Alakli, only one

  INCREASE AS DOWN, RIGH TO LEFT. Hellium small. Francium big.

State which group is likely to become a cation with a +1 charge.

Alkali metals. Since they have one electron to lose in order to become a happy atom with a full valence shell, they will lose it easily. Once they lose one negativity charge, the positive charge of the protons wins and the atom will have a positive charge (by 1 positive charge ) positively charged ions are called cations.

Explain why do atoms become ions.

Atoms become ions so that they can have a full valence shell of electrons. Elements want to be stable (which makes them happy) so in order to be stable, they need to have a full valence shell. They can get a full valence shell by becoming ions. (by losing or gaining electrons)

Explain the difference between a cation and an anion.

A cation is a positively charged ion, it loses electrons. An anion is a negatively charged ion, it gains electrons.