Which ion has the greatest degree of hydration?
Li+ ion
Li+ ion has maximum degree of hydration.
Which is the smallest ion Al3+ Mg2+ Na+ K+?
The correct answer is option (i) – Al3+ Hence, among the given ions Al3+ is the smallest ion.
Why are Na+ Mg2+ and Al3+ called isoelectronic ions?
Those species having the same number of electrons but differ in nuclear charge are called isoelectronic species. Example: Mg2+, Na+, Si4+ , Al3+ have 10 electrons each so they are isoelectronic.
Which is bigger Na+ or Al3+?
Answer. Hence, Na+ is the largest amongst the 3.
Which ion has the larger hydration energy Na+ or K+?
Since sodium is at the top of potassium, Na+ will have larger hydration energy than K+ .
Which ion has high hydration energy?
The lithium-ion has by far the highest hydration enthalpy in Group 1 and the small fluoride ion has by far the highest hydration enthalpy in Group 7. Lithium exerts the greatest polarizing effect out of all the alkali metals on the negative ion.
Which species has highest ionisation energy Na+ Mg2+?
Neon due to closed shell (s2p6) configuration has the highest ionisation potential.
Which of the following is correct order of ionic radii Na+ Mg2+ Al3+ Si4+?
The order of magnitude of ionic radii of ions Na+,Mg2+,Al3+ and Si4+ is [MP PMT 1996] Na+>Mg2+>Al3+>Si4+. All are isoelectronic but nuclear charge per electron is greatest for Si4+. So it has smallest size and nuclear charge per electron for Na+ is smallest.
Which of these isoelectronic species Al3+ or Mg2+ has smaller size and why?
Mg, Mg2+, Al, Al3+. Atomic radii decrease across a period, cations are smaller than their parent atoms. Among isoelectronic ions, the one with the larger positive nuclear charge will have a smaller radius. Hence the largest species is Mg and the smallest one is Al3+ .
Which is bigger mg2+ or Na+?
(i) The sodium ion (Na+) is larger than the magnesium ion (Mg2+) due to two effects.
Which among the following has I largest II smallest ionic radii Na+ al3+ mg2+ F?
Answer: al3+ is the correct answer.
Which ion has minimum hydration energy?
Lithium ion
“Lithium ion has the smallest hydration enthalpy of all the alkali metals.” Answer.
How do you calculate hydration energy?
Anhydrous salts readily combine with water to form hydrates and dissolve with the evolution of heat. The only difference between hydrate and anhydrous salt is the heat is evolved as the heat of hydration in the formation of hydrates. The sodium chloride lattice enthalpy is ΔH for NaCl →→ Na+ + Cl– is 700 kJ/mol.
Which of the ions have maximum hydration energy Sr2+ Ca2+ Mg2+ Be2+?
In the alkaline earth metals the hydration energy for the compact and charged ions is greater than the large sized charged ions. Therefore order of hydration energy in this group isBe2+>Mg2+ >Ca2+>Sr2+>Ba2+.
Which has more ionization energy Mg or mg+?
Which has the higher ionization energy, Na, Mg2+ or Cl-? Mg2+ has highest ionization energy because its Ne electronic configuration which has smallest size among other two. IE is inversely proportional to size.
Why Mg has higher ionization energy than Al?
It is because Mg atom has more stable configuration than Al atom.
Which among the following has I largest II Smallestionic radii Na+ al3+ Mg2+ F?
Which of these isoelectronic species al3+ or Mg2+ has smaller size and why?
Which of the following will have largest size Mg Mg2+ Al Al3+?
Why Mg2+ has smaller size as compared to Na+ Although both have the same noble gas configuration?
mg2+ would be the smaller ion this is because each ion has the same number of electrons however mg2+ has a greater number of protons and therefore is more charge dense and the outer electrons feel a greater pull from the nucleus.