The higher the positive charge the
[ Select ]
smaller
larger
the ion/element. The more negative a charge is, the
[ Select ]
bigger
smaller
the ion/element

Question

The higher the positive charge the 
[ Select ]
smaller
larger
 the ion/element. The more negative a charge is, the 
[ Select ]
bigger
smaller
 the ion/element

BlackTom AI · Accepted Answer

The question presents two blanks to fill about ionic radii: how charge affects ion/element size.
First blank analysis:
- If the option chosen for the first blank is “smaller”: this is correct in many contexts because when an atom loses electrons and becomes a cation with a higher positive charge, the remaining electrons are drawn closer to the nucleus, reducing the ionic radius. Increasing positive charge generally leads to a smaller ion radius.
- If the option chosen for the first blank were “larger”: this would be misleading. A higher positive charge means losing more electron density relative to protons, which typically shrinks the electron cloud, not expands it. So selecting “larger” would not fit the usual trend for cations.
Second blank analysis:
- If the option chosen for the second blank is “bigger”: this aligns with the well-established trend that adding negative charge (more electrons) to an ion increases electron-electron repulsion and expands the electron cloud, resulting in a larger ionic radius. This is especially true when comparing a neutral atom to its anions or ions with increasing negative charge.
- If the option chosen for the second blank were “smaller”: this would contradict the common behavior of negatively charged species, where extra electrons tend to push the electron cloud outward, making the ion larger overall. Hence, selecting “smaller” would be incorrect in this context.
In summary, the reasonable, conventional interpretation is that higher positive charge leads to a smaller ion, and more negative charge leads to a bigger ion, reflecting the balance between nuclear attraction and electron-electron repulsion in ionic radii.

1A W25 Effective Nuclear Charge and Atomic radius (two videos)

The higher the positive charge the [ Select ] smaller larger the ion/element. The more negative a charge is, the [ Select ] bigger smaller the ion/element

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