Answer:
D. F
Explanation:
Electron affinity is defined as the change in energy (in kJ/mole) of a neutral atom (in the gaseous phase) when an electron is added to the atom to form a negative ion. In other words, the neutral atom's likelihood of gaining an electron.
The electron affinity values of the following elements is given;
Electron Affinity of Hydrogen is 72.8 kJ/mol.
Electron Affinity of Lithium is 59.6 kJ/mol
electron affinity of carbon is 153.9 kJ mol‑1
Electron Affinity of Fluorine is 328 kJ/mol
The electron affinity of neon is 0 kJ mol‑1.
When nonmetals gain electrons, the energy change is usually negative because they give off energy to form an anion (exothermic process); thus, the electron affinity will be negative.
Nonmetals have a higher electron affinity than metals, meaning they are more likely to gain electrons than atoms with a lower electron affinity.
That explains why florine seems to have the highest electron affinity value.
<h3><u>Answer</u>;</h3>
17.25 moles of hydrogen
<h3><u>Explanation;</u></h3>
The equation for the reaction;
2HI (g) → H₂(g) + i₂ (g)
34.5 moles of Hydrogen iodide are decomposed;
The mole ratio of HI to Hydrogen = 2 : 1
Therefore;
moles of hydrogen = (34.5/2) ×1
= 17.25 moles
Therefore; 17.25 moles of hydrogen will be produced when 34.5 moles of Hydrogen iodide are decomposed
The one with 20 coils as it can generate more electricity.
The awnser to your question would be B