When reversing a given reaction, we simply change the sign of the standard enthalpy change value. Therefore, the reaction will become:
H₂O → H₂ + 0.5O₂, ΔH = 286kJ
This is because if a certain amount of energy is released when a reaction occurs, the same amount of energy must be supplied for the reaction to occur in the reverse direction.
A is correct .
please vote my answer brainliest. thanks!
Answer is: D. Neon is the most stable element because its highest occupied energy level is filled.
Neon (symbol: Ne) is an element (noble gas) with atomic number 10, which means it has 10 protons and 10 electrons.
Electron configuration of neon atom: ₁₀Ne 1s²2s²2p⁶.
Noble gases are in group 18: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe) and radon (Rn). They have very low chemical reactivity.
<h2> refer the attachment</h2>
<h2>If it is correct so mark as brainlest answer!</h2>
