Mg is atomic number 12. So it has 12 protons and 12 electrons. The atomic mass is 24, so it has 12 neutrons as well.

You are watching: Magnesium number of protons neutrons and electrons

Mg2+ is the cation of Mg which has lost 2 electrons (thus giving it a +2 charge). So,

Mg2+ has 12 protons, 12 neutrons and 10 electrons.


*

Hello, Emma,

Mg has atomic number 12, so it has 12 protons. It has an atomic mass of 24.3 amu (atomic mass units). Protons and neutrons are 1 amu each. Electrons are close to 0 amu, and are included in the mass weight calculations. It there are 12 protons, at 1 amu each, we can subtract 12 from the atomic mass of 24.3 to get 12.3. That is all due to the neutrons. Picking the closest whole number, we can say that Mg has 12 protons and 12 neutrons, for a total of 24 amu. The 0.3 is due to other Mg isotopes containing more than 12 neutrons. The table is an average of the isotopes found in nature. Electrons aren"t cou nted in the mass. Since this is a 2+ cations, it means 2 of its 12 electrons have left, leaving 10 electrons.

Bob


Upvote • 1 Downvote
Add comment
More
Report

Still looking for help? Get the right answer, fast.


Ask a question for free

Get a free answer to a quick problem. Most questions answered within 4 hours.


OR
Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.


¢ € £ ¥ ‰ µ · • § ¶ ß ‹ › « » > ≤ ≥ – — ¯ ‾ ¤ ¦ ¨ ¡ ¿ ˆ ˜ ° − ± ÷ ⁄ × ƒ ∫ ∑ ∞ √ ∼ ≅ ≈ ≠ ≡ ∈ ∉ ∋ ∏ ∧ ∨ ¬ ∩ ∪ ∂ ∀ ∃ ∅ ∇ ∗ ∝ ∠ ´ ¸ ª º † ‡ À Á Â Ã Ä Å Æ Ç È É Ê Ë Ì Í Î Ï Ð Ñ Ò Ó Ô Õ Ö Ø Œ Š Ù Ú Û Ü Ý Ÿ Þ à á â ã ä å æ ç è é ê ë ì í î ï ð ñ ò ó ô õ ö ø œ š ù ú û ü ý þ ÿ Α Β Γ Δ Ε Ζ Η Θ Ι Κ Λ Μ Ν Ξ Ο Π Ρ Σ Τ Υ Φ Χ Ψ Ω α β γ δ ε ζ η θ ι κ λ μ ν ξ ο π ρ ς σ τ υ φ χ ψ ω ℵ ϖ ℜ ϒ ℘ ℑ ← ↑ → ↓ ↔ ↵ ⇐ ⇑ ⇒ ⇓ ⇔ ∴ ⊂ ⊃ ⊄ ⊆ ⊇ ⊕ ⊗ ⊥ ⋅ ⌈ ⌉ ⌊ ⌋ 〈 〉 ◊

RELATED TOPICS


Math Science Biology Physics Biochemistry Organic Chemistry Chemical Engineering Moles Stoichiometry Chem ... Ap Chemistry Ap Physics Thermodynamics Gas Laws Chemical Reactions General Chemistry College Chemistry Chemistry Measurement Word Problem Chemistry Lab Chemistry Conversion

RELATED QUESTIONS

How many photons are produced?

Answers · 2

Why does salt crystals dissolve in the water?

Answers · 7

How much copper wire can be made from copper ore?

Answers · 2

If a temperature scale were based off benzene.

Answers · 3

why does covalent bonds determine the polarity of water?

Answers · 6

RECOMMENDED TUTORS


*

Elise H.

5.0 (475)
*

Kevin A.

5.0 (1,587)
*

Nathan H.

5 (10)
See more tutors

find an online tutor


Download our free app

A link to the app was sent to your phone.

See more: How Far Is Gainesville Fl From Valdosta Ga Inesville, Distance From Valdosta, Ga To Gainesville, Fl


Please provide a valid phone number.
Google Play App Store
Get to know us
Learn with us
Work with us
Download our free app
Google Play App Store
Let’s keep in touch
Tabs over spaces!

Need more convincing?


Best in business since 2005
*
*

Tutors by Subject
Tutors by Location
Sitemap Terms of Use Privacy Policy
© 2005 - 2021 tasiilaq.net, Inc. - All Rights Reserved