1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
natali 33 [55]
3 years ago
15

A. This element has 12 electrons when the atom is electrically neutral.

Biology
1 answer:
Furkat [3]3 years ago
7 0

Answer A) Magnesium

The atomic number of magnesium is 12. The atomic mass of magnesium is 24.31 amu. The total number of electrons is 12. The symbol for the element is Mg.

Answer B) Calcium

The atomic number of magnesium is 20. The atomic mass of Calcium is 40.078 amu. The total number of electrons is 20. The symbol for the element is Ca.

Answer C) Nitrogen

The atomic number of nitrogen is 7. The atomic mass of nitrogen is 14.0067 u. The total number of electrons is 7.  The symbol for the element is N.

Answer D) Carbon

The atomic number of carbon is 6. The atomic mass of carbon is 2.0107 u. The total number of electrons is 6. The symbol for the element is C.

Answer E) Mercury

The atomic number of mercury is 80. The atomic mass of  nitrogen is 200.59 u. The total number of electrons is 80. The symbol of the element is Hg.

Answer F) Gallium

The atomic number of Gallium is  31. The atomic mass of Gallium is 69.723 u. The total number of electrons is 31. The symbol of the element is Ga.

You might be interested in
All the following have only one opening into their digestive system except:
sesenic [268]
The answer is jellyfish B
4 0
3 years ago
If a DNA molecule is found to be composed of 35% thymine, what percentage of cytosine would be expected, and why?
-Dominant- [34]
We use Chargaff's rule to get the answer. [A] + [G] = [C]+ [T].    [A] + [G] + [C] + [T] = 100% Where is A is Adenine, G is Gaunine, T is Thymine and C is Cytosine. In DNA, Adenine always pairs with Thymine, and Guanine always pairs with Cytosine. Therefore if Thymine is 35%, then Adenine will also be 35% to make 70% in total. The remaining percentage will be 100% - 70% = 30%. The 30% will be shared equally among Cytosine and Guanine, at 15% each. Therefore Cytosine will be 15% 
4 0
4 years ago
How is a cat adapted to life as a predator?
love history [14]
1. good eye sight.
2. sharp claws.
3. eye syte.
4. fast.
5. jump high places.
hope this helped :)
6 0
4 years ago
Millions of years ago, the Sierra Nevada region began to be uplifted along a crack in Earth's crust. The region on the other sid
BabaBlast [244]
D. Fold mountain that appeared wavy I think but just in case check an other answer
7 0
3 years ago
Can someone tell me if it’s correct
Pepsi [2]

Answer:

yes ur right

Explanation:

8 0
3 years ago
Other questions:
  • Please answer any you can!
    6·1 answer
  • What is responsible for morphogenesis?
    5·1 answer
  • Which best describes an amino acid?
    12·1 answer
  • Sexually transmitted infections can be passed through which type(s of contact? kine 198
    15·1 answer
  • Evolution of a species could occur as a result of changes in the
    10·1 answer
  • If a single mutation turns off the growth of some pairs of legs within an organism, what's most likely affected?
    12·1 answer
  • What One of the following structures does the air pass through first?
    11·1 answer
  • A functional protein would contain the information contained within which of the following regions of DNA?
    9·1 answer
  • Descibe how the muscle contracts and recharges starting with the release of Ca+ and ending with the cycle of recharging
    6·1 answer
  • Differentiate between unicellular ,colonial and multicellular organization
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!