All categories

3 years ago

Argon, neon, and xenon are examples of _________. A) halogens B) metalloids C) noble gases D) alkali metals

Physics

2 answers:

Ronch [10]3 years ago

5 0

Answer:

Argon, neon and xenon are examples of noble gases.

C is correct option.

Explanation:

According to electronic configuration

Argon:

The atomic number of argon is 18.

The electronic configuration of argon

Ar= 2,8,8

$Ar = 1s^2,2s^22p^6,3s^23p^6$

Neon:

The atomic number of argon is 10.

The electronic configuration of argon

Ar= 2,8

$Ne = 1s^2,2s^22p^6$

Xenon:

The atomic number of argon is 54.

The electronic configuration of argon

Ar= 2,8,18,18,8

$Ne = 1s^2,2s^22p^6,3s^23p^6 3d^{10},4s^24p^6 4d^{10},5s^2 5p^6$

Argon, neon and xenon are examples of noble gases because the last shell is completely filled and they does not participate in any reaction so, these atoms are called noble gasses.

Hence, Argon, neon and xenon are examples of noble gases.

Leona [35]3 years ago

4 0

C) Noble gases! They are all in the last column of the periodic table!

You might be interested in

Martha must carry a 45 N package up three flights of stairs. Each flight of stairs has a height of 2.3m, and the actual distance

Darina [25.2K]

Answer:

310.5 J

Explanation:

The total work done by Martha is equal to the increase in gravitational potential energy of the package, which is equal to

$\Delta U = mg\Delta h$

where

(mg) = 45 N is the weight of the package

$\Delta h$ is the increase in height of the package

The package is carried up 3 flights of stairs, each one with a height of 2.3 m, so the total increase in heigth is

$\Delta h = 3 \cdot 2.3 m=6.9 m$

And so, the work done by Martha is

$U=(45 N)(6.9 m)=310.5 J$

3 0

3 years ago

The beat your doctor listens to through a sethoscope is the sound of the four values opening

djyliett [7]

and closing .

The heart has 4 valves. They are what makes the lub-dub lub-dub sounds that can be heard from the chest.

The mitral valve is located between the left atrium and the left ventricle. It closes the left atrium to collect oxygenated blood from the lungs and opens to pass it on to the left ventricle.

The tricuspid valve is located between the right atrium and the right ventricle. It closes the right atrium to hold unoxygenated blood and opens to pass it on to the right ventricle ensuring a one way flow.

The aortic valve is located between the aorta and the left ventricle. It closes the left ventricle and opens to the aorta to pass on the oxygen-rich blood to the body.

The pulmonary valve is located between the pulmonary artery and the right ventricle. It closes off the right ventricle and opens to pass on unoxygenated blood to the lungs.

5 0

3 years ago

A thin, rectangular sheet of metal has mass M and sides of length a and b. Find the moment of inertia of this sheet about an axi

Lubov Fominskaja [6]

Answer:

The moment of inertia is $I=\frac{M}{12} a^{2}$

Explanation:

The moment of inertia is equal:

$I=\int\limits^a_b {r^{2} } \, dm$

If r is $-\frac{a}{2}$

and $dm=\frac{M}{a} dr$

$I=\int\limits^a_b {r^{2}\frac{M}{a} } \, dr\\a=\frac{a}{2} \\b=-\frac{a}{2}$

$I=\frac{M}{a} \int\limits^a_b {r^{2} } \, dr\\\\I=\frac{M}{a} (\frac{M}{3} )_{b}^{a}\\ I=\frac{M}{3a} (\frac{a^{3} }{8} +\frac{a^{3} }{8} )\\I=\frac{M}{12} a^{2}$

7 0

3 years ago

What are some practical applications for determining the motion of an object?

Mama L [17]

- rocket science
- automotive research
- space research

4 0

3 years ago

The particles that are found in the nucleus of an atom are

kvv77 [185]

Answer: Electrons are the smallest of the three particles that make up atoms. Electrons are found in shells or orbitals that surround the nucleus of an atom

Explanation: hope this helps

8 0

3 years ago