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abruzzese [7]
4 years ago
14

How many elemens are listed in the periodic table

Physics
2 answers:
Vesnalui [34]4 years ago
5 0
118 elements
from what knowledge i have gathered in my human brain i hope that this is helpful
barxatty [35]4 years ago
5 0
118 elements! Hope this is useful!
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The statement that "the lowest energy configuration for an atom is the one having the maximum number of unpaired electrons allow
LUCKY_DIMON [66]

Answer:

Hund's rule

Explanation:

Hund's rule is defined as the rule whose first rule in the chemistry says that, for a given electronic configuration, the term which posses lowest energy has maximum multiplicity. The multiplicity is defined as the tem 2S+1, where S is the total spin angular momentum.

Therefore, the term which has lowest energy that term posses maximum number of S.

Hund's rule of maximum multiplicity: Electron present in same energy orbitals firstly they completed half orbit than start pairing.

Therefore, the energy of lowest configuration for an atom is the one having the maximum number of unpaired electron which is allowed by the Pauli principle in a particular set of degenerate orbit is called Hund's rule.

8 0
3 years ago
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Which goes faster? *<br> light in space<br> sound in air<br> sound in space<br> light in water
andrezito [222]

Answer:

Hello! Your answer is, sound in the air is faster

Explanation:

The speed of sound through air is about 340 meters per second. It's faster through water and it's even faster through steel. Light will travel through a vacuum at 300 million meters per second. So they're totally different scales.

Hope I helped! Ask me anything if you have any questions! Brainiest plz. Hope you make an 100% and have a nice day! -Amelia♥

8 0
3 years ago
What can help a scientist identify any object in a group of objects?
NNADVOKAT [17]

Answer:The object characteristics

Explanation:the objects characteristics

4 0
3 years ago
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A geologic event causes changes to the physical makeup of a particular place and occurs _____.
babymother [125]

A geologic event causes changes to the physical makeup of a particular place and occurs slowly.

Geological events are what causes numerous changes and phenomena on the Earth's surface. Examples of these events include cliff erosion, volcanic eruption, or sedimentation at a mouth of a river.

Geological processes are extremely slow. However, because of the immense lengths of time involved, huge physical changes do occur - mountains are created and destroyed, continents form, break up and move over the surface of the Earth, coastlines change and rivers and glaciers erode huge valleys.

Geological events are both classified as internal and external. This means that these events occur both in the Earth's surface and interior.

4 0
4 years ago
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Jim pushes hard on a rock that weighs 500 pounds. He pushes with a force of 50 pounds, but the rock doesn't move. How much work
seraphim [82]

Answer:

Zero work

Explanation:

Recall that work done on  an object is defined as the product of the net force applied to an object times the distance it travels in the same direction as the force.

Since in this case Jim used a given force to push a rock, but it didn't move, then he did zero work (because the distance moved is zero).

6 0
3 years ago
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