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
kondaur [170]
3 years ago
7

If an atom has twelve electrons, how many electrons are in the n=1 energy level? how many electrons are in the n=2 energy level?

how many electrons are in the n=3 energy level?
Biology
1 answer:
Serjik [45]3 years ago
8 0

Magnesium has 12 electrons.........which wud mean that in the 1st energy level(n=1) there r 2 electrons, in the 2nd energy level(n=2) there r 8 electrons and in the 3rd energy level(n=3) there r 2 electrons.......its simple......use the formula 2n^2 where n= 1,2,3,......  

so the electron configuration of Magnesium in 2,8,2..................or more precisely 1s2, 2s2, 2p6, 3s2

You might be interested in
During the life cycle of a seedless plant, a sporophyte releases
Agata [3.3K]

Answer:

Seedless vascular plants are plants that contain vascular tissue, but do not produce flowers or seeds. In seedless vascular plants, such as ferns and horsetails, the plants reproduce using haploid, unicellular spores instead of seeds. The spores are very lightweight (unlike many seeds), which allows for their easy dispersion in the wind and for the plants to spread to new habitats. Although seedless vascular plants have evolved to spread to all types of habitats, they still depend on water during fertilization, as the sperm must swim on a layer of moisture to reach the egg. This step in reproduction explains why ferns and their relatives are more abundant in damp environments, including marshes and rainforests. The life cycle of seedless vascular plants is an alternation of generations, where the diploid sporophyte alternates with the haploid gametophyte phase. The diploid sporophyte is the dominant phase of the life cycle, while the gametophyte is an inconspicuous, but still-independent, organism. Throughout plant evolution, there is a clear reversal of roles in the dominant phase of the life cycle

Explanation:

7 0
2 years ago
Read 2 more answers
What should Susan say to the customer about the delivery date for the item​
Nadya [2.5K]
You will your on this certain day hope this helped
5 0
3 years ago
Evesa
Artist 52 [7]

Answer:

Active uptake (which I think you mean active transport) is important when the concentration gradient is against that of a certain substance, so it doesn't cross the membrane through diffusion or passive transport. It is sometimes necessary if a substance needs to move across a membrane but can't do so due to electrical charge or that there is a substance on the other side of the membrane preventing diffusion.

Explanation:

8 0
3 years ago
Will give brainliest plz help <br> Answer 14
weeeeeb [17]

Answer:

liquid- enzymes

protein- fat

carbohydrate- saccharides

nuclei acid- dna or deoxyribonucleic acid

3 0
3 years ago
Eli was comparing the temperatures at a desert site and a coastal sit that have the same latitude. He noticed that the nighttime
natta225 [31]

Answer: the color hot

Explanation:

4 0
2 years ago
Other questions:
  • Trace elements are those required by an organism in only minute quantities. Which of the following is a trace element that is re
    14·1 answer
  • Which of the following statements are false?
    15·1 answer
  • Which of the following is a phase that results when the moon is on the same side of the earth as the sun?
    7·2 answers
  • What is not nessaery for an organism to survive
    7·1 answer
  • What are the 2 structure are in plant cells
    9·2 answers
  • Please Help!
    11·2 answers
  • Corn is a type of grass.
    7·2 answers
  • In addition tho the elements found in carbohydrates, proteins contain the element nitrogen. True or False.
    8·2 answers
  • The primary reason that osteoporosis accelerates after menopause in women is: * 2 points A. Increased osteoblast activity. B. Re
    8·1 answer
  • HELP ASAP I WILL GIVE BRAINLIST!! Which of the following best defines the molar mass of a substance? (5 points)
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!