Answer is Iron.
Explanation:
The atomic number of Iron (Fe) is 26. SO the Electronic configuration is,
Fe = 1s², 2s², 2p⁶, 3s², 3p⁶, 4s², 3d⁶
When Iron looses three electrons its electronic configuration becomes,
Fe³⁺ = 1s², 2s², 2p⁶, 3s², 3p⁶, 3d⁵
Result:
After loosing three electrons the d-shell get 5 electrons (Half-Filled D-Orbital) which is stable, Hence due to this stability Iron tends to attain +3 charge.
Answer:
Option B. HgCl2
Explanation:
Data obtained from the question include:
Mass of Mercury (Hg) = 47.3g
Mass of chlorine (Cl) = 16.7g
The empirical formula for the compound can be achieved by doing the following:
Step 1:
Divide by their individual molar mass
Hg = 47.3/201 = 0.235
Cl = 16.7/35.5 = 0.470
Step 2:
Divide by the smallest to express in whole number:
Hg = 0.235/0.235 = 1
Cl = 0.470/0.235 = 2
Therefore, the empirical formula is HgCl2
Answer:
four outer planetsThe Outer Planet the four outer planets and the Sun, with sizes to scale. From left to right, the outer planets are Jupiter, Saturn, Uranus, and Neptune. The gas giants are mostly made of hydrogen and helium. These are the same elements that make up most of the Sun.
Explanation:
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Ari
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Acids are ionic compounds with hydrogen at the front. Bases are ionic compounds with hydroxide at three back(bronsted definition)
A conjugate acid is a base that has gained a proton(hydrogen ion) and a conjugate base is formed when an acid has given up its proton.
Answer:
ΔG° = 2.57 × 10² kJ
The reaction is spontaneous.
Explanation:
<em>The standard cell potential, E°cell, for a reaction in which two electrons are transferred between the reactants is +1.33 V. Calculate the standard free energy change, ΔG°, in kJ for this reaction and determine if it is spontaneous or nonspontaneous at 25°C.</em>
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We can calculate the standard Gibbs free energy (ΔG°) using the following expression.
ΔG° = -n × F × E°cell
where,
n: moles of electrons transferred
F: Faraday's constant
E°cell: standard cell potential
ΔG° = - (2 mol) × (96468 J/V . mol) × 1.33 V
ΔG° = -2.57 × 10⁵ J = 2.57 × 10² kJ
ΔG° < 0 means that the reaction is spontaneous.
