Question

this table shows the electronegativity.
element | electronegativity
f | 3.98
o | 3.44
s | 2.58
mg | 1.31
na | 0.93
fr | 0.7
complete the sentences.
when sulfur and oxygen react, valence electrons are dropdown between the atoms because their en difference is dropdown two. when magnesium and oxygen react, valence electrons are dropdown between the atoms because the en difference between magnesium and oxygen is dropdown two.

Explanation:

Step1: Calcular diferencia de electronegatividad (EN) para S y O

La EN de S es 2.58 y la de O es 3.44. La diferencia es $|3.44 - 2.58| = 0.86$. Diferencias de EN < 1.7 suelen ser enlaces covalentes (compartidos), > 1.7 ionicos (transferidos). 0.86 < 1.7, así que electrones se comparten.

Step2: Comparar diferencia de EN de S-O con 2

0.86 es menor que 2.

Step3: Calcular diferencia de EN para Mg y O

EN de Mg es 1.31, EN de O es 3.44. Diferencia: $|3.44 - 1.31| = 2.13$. 2.13 > 1.7, así que electrones se transfieren (enlace ionico).

Step4: Comparar diferencia de EN de Mg-O con 2

2.13 es mayor que 2.

Answer:

When sulfur and oxygen react, valence electrons are shared between the atoms because their EN difference is less than two. When magnesium and oxygen react, valence electrons are transferred between the atoms because the EN difference between magnesium and oxygen is greater than two.