How would you give the nuclear symbol for the isotope of gallium, Ga, that contains 40 neutrons per atom?


In order to write the nuclear symbol of an isotope ##”X”##, you need to know two things

  • its – the number of protons it has in its nucleus
  • its – the numbe of protons and neutrons it has in its nucleus

In your case, you have to determine what the nuclear symbol will be for an isotope of gallium that contains ##40## neutrons in its nucleus.

The first thing to do here is take a look at a and make a note of gallium’s atomic number.

Gallium is located in period 4, group 13 of , and has an atomic number equal to ##31##.

Since this isotope also has ##40## neutrons in its nucleus, it follows that its mass number will be

##color(blue)(“mass number” = A = “no. of protons” + “no. of neutrons”)##

##A = 31 + 40 = 71##

Now, nuclear symbol notation must follow these rules

In your case, ##A = 71## and ##Z = 31##, so you have

##””_31^71″Ga” ->## gallium-71

Show more

Calculate Your Essay Price
(550 words)

Approximate price: $22

Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
The price is based on these factors:
Academic level
Number of pages
Basic features
  • Free title page and bibliography
  • Unlimited revisions
  • Plagiarism-free guarantee
  • Money-back guarantee
  • 24/7 support
On-demand options
  • Writer’s samples
  • Part-by-part delivery
  • Overnight delivery
  • Copies of used sources
  • Expert Proofreading
Paper format
  • 275 words per page
  • 12 pt Arial/Times New Roman
  • Double line spacing
  • Any citation style (APA, MLA, Chicago/Turabian, Harvard)

Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

Read more

Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

Read more

Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.

Read more

Privacy policy

Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.

Read more

Fair-cooperation guarantee

By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.

Read more

Order your essay today and save 10% with the coupon code: best10