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
wolverine [178]
4 years ago
14

An atom has the following electron configuration.

Chemistry
2 answers:
kherson [118]4 years ago
5 0

Answer:

5 electrons

Explanation:

Valence electrons are electrons located in the outermost energy shell, so you want to count the number of electrons in the last energy shell.

You can divide the configuration into 1s2 / 2s22p6 / 3s23p3 to see the energy shells in this atom. There are 3 shells occupied by the atom's electrons, so you need to count the electrons in the third shell as those are its valence electrons.

2 + 3 = 5 valence electrons total

Note: you don't count the 3 before the letter because that only indicates the shell level, not the number of electrons. Count only the exponents.

frutty [35]4 years ago
4 0

Answer: 5 valence electrons

You might be interested in
What do you call a large body of air?<br> wind<br> thunderstorm<br> cold front<br> air mass
Keith_Richards [23]

Answer:

thunderstrom

Explanation:

it will be answer

4 0
2 years ago
Read 2 more answers
What's the difference between incomplete dominance and codominance
EastWind [94]
In total dominance, the phenotype sees only one allele in the genotype. Both alleles in the genotype are seen in the phenotype during codominance. In incomplete dominance, in the phenotype, a mixture of the alleles in the genotype is seen.
7 0
3 years ago
A brownish haze that is a mixture of ozone and other chemicals, formed when pollutants react with each other in the presence pf
soldi70 [24.7K]
The haze is called smog, hope this helps, pls mark brainliest!
8 0
4 years ago
Which substance is a heterogeneous mixture
Anton [14]
Mixtures of sand and water or sand and iron filings, a conglomerate rock, water and oil, a portion salad, trail mix, and concrete (not cement).
6 0
4 years ago
Read 2 more answers
What is the specific heat of the solid phase? (Please see picture attached)
ValentinkaMS [17]

Answer:

B.0.2 J/g°C

Explanation:

From the attached picture;

  • Heat attained in the solid phase is 200 Joules
  • Change in temperature is 50°C ( from 0°C to 50°C)
  • Mass of the solid is 20 g

We are required to determine the specific heat capacity of the substance;

  • We need to know that Quantity of heat is given by the product of mass,specific heat capacity and change in temperature.
  • That is; Q = mcΔT

Rearranging the formula;

c = Q ÷ mΔT

Therefore;

Specific heat = 200 J ÷ (20 g × 50°c)

                      = 0.2 J/g°C

Thus, the specific heat of the solid is 0.2 J/g°C

4 0
3 years ago
Other questions:
  • A mineral that contains silicon and oxygen
    15·1 answer
  • The reaction of 2h2+o2--&gt;2H2o + heat is
    15·2 answers
  • Please help
    14·2 answers
  • A condor has a wing span of 3.05 m. What is the wing span in feet
    11·1 answer
  • Match the appropriate name for each chemical reaction description provided.
    6·2 answers
  • Both prokaryotes and eukaryotes have small, free-floating organelles. The cell makes these organelles from nucleic acids and ami
    15·1 answer
  • What happens to particles when they are heated?
    13·1 answer
  • M
    13·2 answers
  • Which environmental conditions contribute most to the spread of bacteria?
    13·1 answer
  • When magnesium hydroxide reacts with nitric acid, it produces magnesium nitrate and water
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!