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The atomic number is the count of how many protons an atom has in its nucleus (and therefor also the count of how many electrons the neutral atom possesses). The atomic number us unique for each element and positions the element in the Periodic Table.

The element with atomic number 39 is Yttrium (Y).

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βˆ™ 14y ago
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βˆ™ 14y ago

The 39th chemical element is yttrium.

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βˆ™ 14y ago

phosphorous has mass number 39 in its normal state.

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βˆ™ 9y ago

Atomic number 38 is Strontium (Sr).

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βˆ™ 15y ago

Yttrium

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βˆ™ 11y ago

thulium

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βˆ™ 8y ago

Potassium

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βˆ™ 8y ago

Argon

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Q: What element has a atomic mass of 39.9?
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The average atomic mass of the element cesium is approximately 133 you What is the mass of 3.00 mol of cesium?

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The average atomic mass of the element cesium is approximently 133 amu what is the mass of 3.00 mol of casium?

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What is the atomic mass for magnesiam?

Magnesium is a meta element. Atomic mass of it is 24.


Which element has the atomic mass of 126.9045?

The element is Iodine (I). It has an atomic mass of about 126.9.


What is the difference between the atomic number and the atomic mass?

Atomic mass is the mass of 1 mole of the element. Atomic number is the number of protons the element has


Which is the average of the mass numbers of an element's isotopes?

the Atomic Mass


What is the atomic mass of a nickel?

Nickel is a meta element. Atomic mass of it is 59.


What is the atomic mass of Antimony?

Antimony is a meta element. Atomic mass of it is 122.


What is the atomic mass of the element iron?

Iron is a meta element. Atomic mass of it is 56.


What is the atomic mass of this element Au?

Gold is a meta element. Atomic mass of it is 197.


What is the atomic mass of the element flourin?

Fluorine is a meta element. Atomic mass of it is 19.


What is the atomic mass of the element gold?

gold is a meta element. Atomic mass of it is 197.