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
Elanso [62]
2 years ago
13

I have seven energy levels, but only 1 valence eletron?

Chemistry
1 answer:
Olenka [21]2 years ago
3 0

Answer:

Francium (Fr)

Explanation:

Looking at the periodic table, Francium has 7 energy levels as it is in the 7th Period and is in the 1st Group (meaning it has one electron in the outermost shell) which suggests that it has one valence electron.

<em>Hope this helps and be sure to have a wonderful time ahead at Brainly! :D</em>

You might be interested in
If the pH of vinegar is 3.0, what is the concentration of H+ in vinegar?
Cerrena [4.2K]

Answer: The concentration of H^{+} ions in vinegar is 0.001 M.

Explanation:

Given: pH = 3.0

pH is the negative logarithm of concentration of hydrogen ion.

The expression for pH is as follows.

pH = - log [H^{+}]

Substitute the value into above expression as follows.

pH = - log [H^{+}]\\3.0 = - log [H^{+}]\\conc. of H^{+} = antilog (- 3.0)\\= 0.001 M

Thus, we can conclude that the concentration of H^{+} ions in vinegar is 0.001 M.

5 0
2 years ago
What gas is measured in an ICE CORE and what is the correlation between that gas and temperature?
PSYCHO15rus [73]

Answer:

Explanation By looking at past concentrations of greenhouse gasses in layers in ice cores, scientists can calculate how modern amounts of carbon dioxide and methane compare to those of the past, and, essentially, compare past concentrations of greenhouse gasses to temperature. Ice coring has been around since the 1950s.n:

3 0
3 years ago
Read 2 more answers
Which shows the formula for an organic acid?
Inga [223]

Answer:

A

Explanation:

CH3CH2COOH- Propanoic Acid

6 0
3 years ago
Why cant chemical changes be reversed
kotykmax [81]

Answer:

Throughout the explanation section, the reason behind the given statement is described.

Explanation:

  • The chemicals thus produced were indeed opposite or separate from the reaction mixture, this same reaction wouldn’t change when it's more balanced than some of the reactants.
  • Another reason is that the development of advanced organisms, as well as chemical alterations, is irreversible throughout nature cant undo the chemical modifications.

4 0
3 years ago
Which word means the remains or imprints of once-living organisms found in layers of rock
Lerok [7]
Fossils is the answer
5 0
3 years ago
Other questions:
  • Which of these would DECREASE the solubility of a solid in water?
    7·1 answer
  • Kwame wants to measure the volume of water contained in a disposable foam coffe. Which should he use? Nanoliters? Milliliters? O
    7·2 answers
  • What drug is the greatest challenge for Forensic Science? What drug in specific is a threat in Forensics.
    10·2 answers
  • Uncooked lean ground beef can contain up to 12% fat by mass. How many grams of fat would be contained in 0.97 lbs of ground beef
    11·1 answer
  • Explain how paper chromatography could be used to separate a mixture of different coloured inks
    9·1 answer
  • Paper thickness varies. Typically, 100 sheets are about a cm thick. Atoms typically vary from 1 to 3 angstroms in radius. (An an
    15·1 answer
  • Which statements describe sedimentary rock? Check all that apply,
    7·2 answers
  • NEED HELP ASAP
    13·2 answers
  • The ability of nitrogen to attract electrons is
    14·1 answer
  • Which statement is FALSE?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!