Which element has 31 electrons in each neutral atom?

Rationale

Gallium (Ga) has 31 electrons in each neutral atom.

Gallium has an atomic number of 31, which indicates that it has 31 protons and, in a neutral state, the same number of electrons. This characteristic defines its identity as the element gallium on the periodic table.

A (Gallium (Ga)) CORRECT

Gallium is the correct answer because it has an atomic number of 31, meaning it possesses 31 protons and, consequently, 31 electrons when neutral. This number is crucial for determining the element's chemical properties and behavior.

B (Neon (Ne)) YOUR ANSWER

Neon has an atomic number of 10, which means it contains only 10 protons and 10 electrons in its neutral state. Thus, it cannot be the answer to the question, as it does not meet the requirement of having 31 electrons.

C (Aluminum (Al)) YOUR ANSWER

Aluminum has an atomic number of 13, indicating that it has 13 protons and, similarly, 13 electrons in a neutral atom. This is significantly less than the 31 electrons specified in the question, ruling it out as a possible answer.

D (Hydrogen (H)) YOUR ANSWER

Hydrogen has an atomic number of 1, which means it contains only 1 proton and 1 electron when neutral. Clearly, this is far from the 31 electrons mentioned in the question, making hydrogen an incorrect choice.

Conclusion

The atomic number of an element directly determines the number of electrons present in its neutral state. Gallium, with its atomic number of 31, is the only choice that satisfies the condition of having 31 electrons. The other options, neon, aluminum, and hydrogen, either have far fewer electrons or do not meet the specified atomic number, highlighting the unique identification properties of elements based on their electron configurations.

Which element has 31 electrons in each neutral atom?

Gallium (Ga) has 31 electrons in each neutral atom.

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