How many electrons does a neutral atom of iodine have?

Question

How many electrons does a neutral atom of iodine have??  
A. 53  
B. 74  
C. 126  
D. 127

Accepted Answer

Correct Answer: (A)53. 
Rationale: A neutral atom of iodine has 53 electrons.The number of electrons in a neutral atom is equal to its atomic number, which is the number of protons in the nucleus. This equality ensures the atom has no net electrical charge.A) 53Iodine (I) has an atomic number of 53. This means every iodine atom contains 53 protons in its nucleus. For the atom to be electrically neutral, it must also contain 53 electrons to balance the positive charge of the 53 protons. This is the fundamental rule governing neutral atoms.B) 74The number 74 is the atomic number of tungsten (W), not iodine. It may be mistakenly associated with the neutron count of a common iodine isotope or confused with another element. It does not correspond to the proton count of iodine.C) 126The number 126 is approximately double iodine's atomic number and is close to the neutron count for some of its heavier isotopes. For example, iodine-127 has 74 neutrons (127-53=74). The number 126 is not a standard value for iodine's subatomic particles and is certainly not its electron count in a neutral atom.D) 127The number 127 is the mass number of the most common stable isotope of iodine, Iodine-127. The mass number is the sum of protons and neutrons (53 protons + 74 neutrons = 127). This is a measure of the atom's approximate mass, not its electron count.Conclusion:The defining characteristic of an element is its atomic number (proton count). In a neutral atom, the electron count must match the proton count to achieve charge balance. Iodine's atomic number is 53, so a neutral iodine atom possesses 53 electrons.

How many electrons does a neutral atom of iodine have?

A
53

B
74

C
126

D
127

A neutral atom of iodine has 53 electrons.

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How many electrons does a neutral atom of iodine have?

A 53 B 74 C 126 D 127

A neutral atom of iodine has 53 electrons.

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Related Questions

A
53

B
74

C
126

D
127