Answer:
3. Equal numbers of protons and neutrons
Explanation:
The nucleus becomes unstable if the ratio of protons to neutrons is less than 1:1 or more than 1:1.5.
The most stable nucleus has a neutron proton ratio of 1:1 which means that they can not release a neutron or a proton to decay.
Nucleus 3 is therefore the most stable.
In order to convert the moles of a substance to grams, you will need to multiply the mole value of the substance by its molar mass. More commonly written for this application as: where, is the molar mass of the substance.
Hope this helped
:)
The standard cell potential is obtained from the equation of the reaction.
<h3>What is the standard cell potential?</h3>
The standard cell potential is obtained from the equation of the reaction. Now we have the overall cell equation as from the half reactions as;
Oxidation half reaction;
Al(s) --->Al³+ (aq) + 3 e
Reduction half equation;
Cu²+ (aq) + 2 e →→ Cu(s)
Standard cell potential Eºcell = 0.34V - (-1.66 V) = 2 V
Now;
ΔG = -nFEcell
ΔG = -(2 * 6 * 96500 * 2)
ΔG = -2316kJ
E = 2 - 0.0592/6 log [0.0025]/[3.5 M]
E = 2 + 0.031
E = 2.031 V
Learn more about standard cell potential:brainly.com/question/14240930
#SPJ1
The answer is Na which is sodium
