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2 years ago

When the electron from the n=4 excited state drops to the ground state, does it absorb energy or emit energy?

Chemistry

1 answer:

zubka84 [21]2 years ago

3 0

Answer:

It emits energy since to move from a higher energy level to a lower energy level or ground state, it must lose energy.

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Over a long period of time, an igneous rock changes into a sedimentary rock. Which of these actions must have affected the igneo

Alla [95]

Answer: The actions that must have affected the igneous rock in order to form the sedimentary rock is that (It must have been broken down into sediments).

Explanation:

Rocks are solid structures that occurs naturally which is made up of different minerals. There are three main types of rocks, these includes:

--> METAMORPHIC ROCKS: These are the type of rocks which are formed by temperature and pressure changes inside the Earth.

--> SEDIMENTARY ROCKS: these rocks are usually formed from pre-existing rocks through the process of weathering (breaking down) of rocks.

--> IGNEOUS ROCKS: these rocks are formed when molten magma cools beneath or above the earth surface.

The actions that must have affected the igneous rock in order to form the sedimentary rock is that the igneous rocks are broken down into smaller pieces by erosion and weathering processes. Sediments which are formed accumulates at the earth surface. Over a long period of time, these sediments builds successive layers on top of one another. The sediments near the base hardens to form sedimentary rocks. This justifies the statement as a correct option (It must have been broken down into sediments).

3 0

3 years ago

4. Which of the following NOT TRUE about real gas

Semenov [28]

Answer:

The answer is D.

Explanation:

Intermolecular force are negligible

When the distance between molecules decrease,

the attraction or repulsion become greater

7 0

2 years ago

What ion (cation or anion and charge) do the halogen group (17) form to fulfill the octet

Dafna11 [192]

Answer:

option B= anion (-1)

Explanation:

The halogens are present in the P- block of periodic table. There are thirty five elements present in p-block. The halogens are present in group seventeen. Their are seven electrons are present in valance sheet. All halogens require one electron to complete the octet and form anion carry -1 charge.

Halogens include following elements:

Fluorine, chlorine, bromine, iodine and astatine.

The halogens mostly form single bond with the other elements by gaining one electron and -1 charge. These are most reactive non-metals.

Properties of some halogen elements:

Fluorine:

1. It is yellow in color.

2. It is flammable gas.

3. It is highly corrosive.

4. Fluorine has pungent smell.

5. It's reactions with all other elements are vigorous except neon, oxygen, krypton and helium.

Chlorine:

1. It is greenish-yellow irritating gas.

2. Its melting point is 172.2 K.

3. Its boiling point is 238.6 K.

4. It is disinfectant and can kill the bacteria.

5. It is also used in manufacturing of paper, paints and textile industries.

Iodine:

1. It is present in solid form.

2. It is crystalline in nature.

3. It is very corrosive and has pungent odor.

4. It can not react with oxygen and nitrogen.

6 0

3 years ago

What mass of helium is in a 2.00 L balloon at STP? pls help me lol

sertanlavr [38]

Once upon a time there was a lovely

princess. But she had an enchantment

upon her of a fearful sort which could

only be broken by love's first kiss.

She was locked away in a castle guarded

by a terrible fire-breathing dragon.

Many brave knights had attempted to

free her from this dreadful prison,

but non prevailed. She waited in the

dragon's keep in the highest room of

the tallest tower for her true love

and true love's first kiss. (laughs)

Like that's ever gonna happen. What

a load of - (toilet flush)

Allstar - by Smashmouth begins to play. Shrek goes about his

day. While in a nearby town, the villagers get together to go

after the ogre.

3 0

3 years ago

Which is true about the total mechanical energy in a closed system?

ryzh [129]

It’s between C and B

3 0

3 years ago

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