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the atomic number is 53 and the Atomic Mass is 126.9 so you would round it up to 127

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13y ago
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13y ago

The atomic mass is 126.9 for iodine.

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13y ago

Iodine has an atomic mass of 127

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8y ago

126.90

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Q: Iodine atomic number and atomic mass?
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Related questions

What is the atomic mass number of iodine?

The atomic mass number of iodine is 17.8923


The atomic mass of iodine is less than the atomic mass?

The atomic mass of iodine is less than the atomic mass of all elements with greater atomic number.


What is the atomic number and atomic mass of iodine?

The atomic number of iodine (I) is 53.The atomic weight of I is 126.90 grams per mole.Iodine is a diatomic molecule, I2.See the Web Links to the left of this answer for a periodic table with more information about this element!


Why does tellirium has a larger mass number than iodine?

Iodine is a non metal element. Atomic mass number of it is 127.


Atomic number 50 and mass number 125 contains?

iodine


What is the atomic mass of iodine?

Atomic mass of Iodine is 126.90447 ± 0.00003 u.


What element has 127 atomic mass?

Iodine is a non meta element. Atomic mass of it is 127.6.


How tellurium and iodine show the periodic table is not arranged on basic of increasing atomic mass?

They show that the periodic table isn't arranged on the basis of increasing atomic mass because iodine has a mass lesser than tellurium. Iodine has a mass of 126.90 and tellurium has a mass of 127.60.


What is the atomic number for iodine-131?

The atomic number is the same as the number of protons in the nucleus of the particle. Therefore, every atom, ion, and isotope of iodine has an atomic number of 53 (regardless of its mass number).


What ordered pairs of elements shows an increase in atomic number but a decrease in average atomic mass?

this happens with argon and potassium, and also with cobalt nickel. fun stuff.


What is iodine's atomic number?

The Atomic number of iodine is 53.


What element has atomic number of 53?

Iodine is a halogen. Single atom has 53 protons.