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
fiasKO [112]
2 years ago
5

Which of the following electron configurations describes an element that is a noble gas?

Chemistry
2 answers:
butalik [34]2 years ago
5 0

Answer:

The answer to your question is: letter D.

Explanation:

Noble gases are located in group VIIIA of the periodic table, this means that they have 8 eight electrons in their outermost shell.

Due to this characteristic, they are stable and do not react with other elements.

a. 1s22s22p4    The outermost shell of this electron configuration has 6 electrons, then this element has 6 electrons not 8. This configuration is of an element of the group VIA.

b. [Ne]2s22p2  The outermost shell of this element has 4 electrons, so this is not the configuration of a noble gas.

c. [Ar] 3s1  This element only has one electron in its outermost shell, so this is the electron configuration of an alkaline metal.

d. 1s22s22p6 This element has 8 electrons in its outermost shell, so this is the electron configuration of a noble gas.

alexira [117]2 years ago
5 0

Answer:

D

Explanation:

got it right on the chem quiz

You might be interested in
A ray in the emission spectrum has a wavelength of 3.10 x 1014 meters. Given that the speed of light is 2.998 x 108 m/s, what is
bulgar [2K]
<span>0.967 x 10^-6 HZ

This should be correct (:</span>
8 0
3 years ago
Read 2 more answers
A gas occupies a volume of 85.0 liters at a pressure of 2.24 atm and a temperature of 22.5 degrees celsius. How many moles of ga
White raven [17]

Answer:

n = 7.86 mol

Explanation:

This question can be solved using the ideal gas law of PV = nRT.

Temperature must be in K, so we will convert 22.5C to 295 K ( Kelvin = C + 273).

R is the ideal gas constant of 0.0821.

(2.24atm)(85.0L) = n(0.0821)(295K)

Isolate n to get:

n = (2.24atm)(85.0L)/(0.0821)(295K)

n = 7.86 mol

8 0
2 years ago
Wich describes a characteristic of terminal moraine
stealth61 [152]
I found this....

Supraglacial Moraine

A supraglacial moraine is material on the surface of a glacier. Lateral and medial moraines can be supraglacial moraines. Supraglacial moraines are made up of rocks and earth that have fallen on the glacier from the surrounding landscape. Dust and dirt left by wind and rain become part of supraglacial moraines. Sometimes the supraglacial moraine is so heavy, it blocks the view of the ice river underneath.

If a glacier melts, supraglacial moraine is evenly distributed across a valley.

Ground Moraine

Ground moraines often show up as rolling, strangely shaped land covered in grass or other vegetation. They don’t have the sharp ridges of other moraines. A ground moraine is made of sediment that slowly builds up directly underneath a glacier by tiny streams, or as the result of a glacier meeting hills and valleys in the natural landscape. When a glacier melts, the ground moraine underneath is exposed.

Ground moraines are the most common type of moraine and can be found on every continent.

Terminal Moraine

A terminal moraine is also sometimes called an end moraine. It forms at the very end of a glacier, telling scientists today important information about the glacier and how it moved. At a terminal moraine, all the debris that was scooped up and pushed to the front of the glacier is deposited as a large clump of rocks, soil, and sediment.

Scientists study terminal moraines to see where the glacier flowed and how quickly it moved. Different rocks and minerals are located in specific places in the glacier’s path. If a mineral that is unique to one part of a landscape is present in a terminal moraine, geologists know the glacier must have flowed through that area.
6 0
2 years ago
NEED HELP ASAP WILL MARK BRAINLIEST
Andreas93 [3]

Answer: only O is unbalanced

Explanation:

There are only 2 oxygen atoms on the left but in the right there are 4

8 0
3 years ago
What was important about the copernican revolution?
abruzzese [7]
C i think because new info can be found to make a new idea
7 0
2 years ago
Other questions:
  • 5C + 6O2 = ? What will be the product of molecules formed from this equation?
    10·2 answers
  • What gas has formed when bubels form when water is boiled?
    10·1 answer
  • What is the empirical formula of a molecule containing 65.5% carbon, 5.5% hydrogen, and 29.0% oxygen?
    5·1 answer
  • PLEASE I NEED HELP NOW!!! I WILL GIVE 25 POINTS
    11·1 answer
  • Is baking bread a chemical or physical change? a Chemical b Physical c Neither
    8·1 answer
  • At which point is potential energy greatest
    12·2 answers
  • how much power is needed to move a box a distance of 2 meters in 4 seconds when you push with 1,492 newton’s
    14·1 answer
  • What is the difference between test tube and boiling tube​
    10·1 answer
  • A scientist tested a series of solutions to determine their pH, and recorded the results in this table.
    13·1 answer
  • How cold does it have to be for boiling water to freeze instantly
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!