Na+is bigger
Na+ and Cl- are spectator ions.
Na+-K+ ATPase
Yes, Na⁺ (sodium ion) has a smaller radius than neutral Na (sodium atom). When sodium loses an electron to become Na⁺, it has fewer electron-electron repulsions and a stronger effective nuclear charge acting on the remaining electrons, which pulls them closer to the nucleus. As a result, the ionic radius of Na⁺ is smaller than the atomic radius of neutral Na.
Na+ plus OH- plus H+ equals H2O plus Na+ plus Cl-
The neutral atom of potassium has the largest radius.
Hydrochloric acid and sodium hydroxide yield salt and water H+ + Cl- + Na+ + OH- --> Na+ + Cl- + H2OComment:In solutions you better leave unchanged ions ( Cl- and Na+) out of the balanced equation: called to be 'tribune ions' (people on the tribune don't take part in the 'match'):H+ + OH- --> H2O This looks simpler than: H+ + Cl - + Na + + OH- --> Na + + Cl - + H2O
+4 is bigger than -5
The net ionic equation for the given reaction is H+ (aq) + OH- (aq) → H2O (l)
binding to Na+ carrier proteins
In the reaction involving Na⁺, OH⁻, Cl⁻, and H₂O, the spectator ions are Na⁺ and Cl⁻. These ions do not participate in the chemical reaction; they remain unchanged in the solution. The key species that participate in the reaction are OH⁻ and H₂O, which can combine to form water or other products depending on the context.
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The Na+ you are referring to is a sodium ion.