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Select the correct answer.
Which atom or lon is the largest?

User Dan Bolofe
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2 Answers

17 votes
17 votes

Answer:urenium

Explanation: because his atomic number is 235

User Clement Bellot
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12 votes
12 votes

Answer:

We know when the no of protons (+ charge) is greater than the no of electrons (- charge), the nucleus pulls the electrons with greater force, hence making the size smaller. Clearly, the cations are smaller than the atoms, this largest atom/ion will be Ca.

K has 19 protons, 19 electrons

K+ has 19 protons, 18 electrons

Ca has 20 protons, 20 electrons

Ca2+ has 20 protons, 18 electrons

Li has 3 protons, 3 electrons

Clearly, the cations are smaller than the atoms, this largest atom/ion will be Ca.

Step-by-step explanation:

User Kontur
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