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dem82 [27]
2 years ago
12

7. Define electronegativity

Chemistry
1 answer:
neonofarm [45]2 years ago
5 0
Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons.
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Consider the addition of an electron to the following atoms from the fourth period. Rank the atoms in order from the most negati
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Ge: [Ar] 3d10 4s2 4p2 => 6 electrons in the outer shell

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The electron affinity or propension to attract electrons is given by the electronic configuration. Remember that the most stable configuration is that were the last shell is full, i.e. it has 8 electrons.

The closer an atom is to reach the 8 electrons in the outer shell the bigger the electron affinity.

Of the three elements, Br needs only 1 electron to have 8 electrons in the outer shell, so it has the biggest electron affinity (the least negative).

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Kr, which is a noble gas, has 8 electrons and is not willing to attract more electrons at all, the it has the lowest (more negative) electron affinity of all three to the extension that really the ion is so unstable that it does not make sense to talk about a number for the electron affinity of this atom.

Read more on Brainly.com - brainly.com/question/1832586#readmore

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