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Atomic number is the number of protons in the nucleus of an atom. Therefore, sodium's atomic number is always 11, even if it loses 1 electron. However, when a sodium atom loses 1 electron, it will form an ion with a 1+ charge.

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10y ago
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11y ago

When a sodium atom loses an electron from its valence shell, it becomes a positively charged ion with a charge of 1+.

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14y ago

Nothing. The atomic number is the same as the number of protons. When sodium loses an electron, the number of protons will not change. Therefore, the atomic number will stay the same.

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6y ago

The cation Na+ is formed.

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Q: What happens to the atomic number of sodium when it loses one electron?
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Related questions

Does sodium have ten neutrons?

Actually, the element Sodium has eleven (11) electrons. You can tell by its Atomic number. (The number at the top left side of the element's box.)The Atomic number is both the element's proton and electron number.


The atomic number of sodium?

Sodium's atomic number is 11.


How many atomic number does a sodium atom have?

Sodium is a metal element. Atomic number of it is 1.


Is na an element?

Yes. Na is the chemical symbol for Sodium. Sodium is an Alkali Metal in Group 1 of the Periodic Table. Sodium has the atomic number 11, has 3 electron shells with 1 electron in the outer shell.


What is the atomic number of element sodium?

The atomic number of sodium is 11.


What is the electronic configuration of sodium?

Atoms of the element sodium (atomic number 11) have the electron configuration 1s22s22p63s1 with the noble gas form [Ne] 3s1


How many valance electrons dose a sodium atom have?

Since sodium has atomic number 11, its electronic configuration is untill 3s1. This means the valence shell has 1 electron, so it has 1 valence electron.


Why is the atomic number of sodium 11?

Sodium is a metal element. Atomic number of it is 11.


What is the atomic number and symbol for the element sodium?

Sodium (Na) is atomic number 11.


What Is the Atomic number of sodium (Na)?

The atomic number of sodium is 11, and the symbol is Na.


What is The Symbol And atomic Number For The Element of Sodium?

sodium= NA atomic number= 11


What is the atomic number and symbol of sodium?

The atomic number of sodium is 11, and the symbol is Na.