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
Stells [14]
3 years ago
12

Use the periodic table to identify the number of core electrons and the number of valence electrons in each case below. Potassiu

m (K): 1s22s22p63s23p64s1 core electrons valence electrons
Physics
2 answers:
gogolik [260]3 years ago
6 0

Answer:

Potassium has one valence electron.

Potassium has 18 core electron.

Explanation:

Valance electron:

Valence electron is a electron present in the outermost shell of the atom. Potassium electron has 19 electrons. The outermost shell of potassium has only one electron present in it. Thus, Potassium has one valence electron.

Core electrons:

Core electrons are present in the inner shell of atom and it is given by,

Number of core electron = Atomic number - Number of valence electron

Number of core electron = 19 - 1

Number of core electron = 18

Thus, Potassium has 18 core electron.


pogonyaev3 years ago
3 0
18 core elections 
one valance election

You might be interested in
6 use superposition to find voltage v(t) across the 100 ohm resistor
Vinvika [58]
It'll be my pleasure to analyze the circuit, describe my analysis in detail,
and give you a clear, precise, and accurate answer.

As soon as you let me see the circuit diagram, with values marked on
all of its components and power sources.
6 0
3 years ago
A ____________ is a condition or behavior that may threaten an individual's well-being
pickupchik [31]
It would be risk factor
7 0
2 years ago
Read 2 more answers
The diffusion rate for a solute is 4.0 x 10^-11 kg/s in a solvent- filled channel that has a cross-sectional area of 0.50 cm^2 a
zlopas [31]

Answer:

s = 9.6\times 10^{-12}kg/s

Explanation:

Given:

Solute Diffusion rate  = 4.0 × 10⁻¹¹ kg/s

Area of cross-section = 0.50 cm²

Length of channel  =0.25 cm

Now for the new channel

Area of cross-section = 0.30 cm²

Length of channel  =0.10 cm

let the Solute Diffusion rate  of new channel = s

now equating the diffusion rate per unit volume for both the channels

\frac{4\times 10^{-11}}{0.50\times 0.25}=\frac{s}{0.30\times 0.10}

thus,

s = 9.6\times 10^{-12}kg/s

7 0
3 years ago
1)Pitch is measure of the ____________ of sound.
amid [387]

Answer:

1) wave length

2) parallel reflection

7 0
2 years ago
Am I correct?? Will give brainliest
Anna35 [415]
Yes that looks correct to me. good luck!!
5 0
3 years ago
Other questions:
  • A firecracker is placed in the middle of a cluster of stationary billiard balls. The firecracker-billiard ball system sits on a
    7·2 answers
  • How does Pascal's principle describe pressure throughout a fluid?
    10·1 answer
  • The table below shows the measurements took in an experiment.
    11·2 answers
  • Describe the proton gradient generated by the electron transport chain
    15·1 answer
  • ____________ showed that matter and energy are two forms of the same thing.
    10·2 answers
  • Why metal wire coated with plastic or rubber is used in electric circuits
    11·1 answer
  • True or False: How much we weigh on Earth is a direct result of the force of the Earth's gravity.
    5·2 answers
  • An example of an insulator is
    9·1 answer
  • The question is on the picture
    13·1 answer
  • A kayak took 5 hours to finish its trip on a river. If it traveled at an
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!