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2 years ago

How many valence electrons are there in an argon atom?

Chemistry

1 answer:

Evgen [1.6K]2 years ago

6 0

Answer:

eight

Explanation:

Hence, from the above given configuration it is clear that the number of valence electrons in the Argon atom is eight.

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A gas at a constant volume has an initial temperature of 300.0 K and an initial pressure of 10.0 atm. What pressure does the gas

harkovskaia [24]

$\frac{500}{300} times 10=16.667 atm$

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2 years ago

Select all the signs of a CHEMICAL change from the list below. (You may need to select more than one for full points)

wlad13 [49]

The answers are B, C, and D.

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3 years ago

Read 2 more answers

Match each transition metal ion with its condensed ground-state electron configuration. A [Ar]3d2 B [Ar]4s23d3 C [Kr]4d10 D [Xe]

madreJ [45]

Answer:

$Mn^{2+}$ : - F . $[Ar]3d^{5}$

$Hg^{2+}$ : - G. $[Xe]4f^{14}5d^{10}$

$La^{3+}$ : - D. $[Xe]$

$Fe^{3+}$ : - F. $[Ar]3d^{5}$

$Ag^{+}$ : - C. $[Kr]4d^{10}$

$Co^{3+}$ : - E. $[Ar]3d^{6}$

Explanation:

The electronic configuration of the element Mn is:-

$[Ar]3d^{5}4s^2$

For, $Mn^{2+}$ , 2 electrons are lost, thus the configuration is:-

$[Ar]3d^{5}$

The electronic configuration of the element Hg is:-

$[Xe]4f^{14}5d^{10}6s^2$

For, $Hg^{2+}$ , 2 electrons are lost, thus the configuration is:-

$[Xe]4f^{14}5d^{10}$

The electronic configuration of the element La is:-

$[Xe]5d^{1}6s^2$

For, $La^{3+}$ , 3 electrons are lost, thus the configuration is:-

$[Xe]$

The electronic configuration of the element Fe is:-

$[Ar]3d^{6}4s^2$

For, $Fe^{3+}$ , 3 electrons are lost, thus the configuration is:-

$[Ar]3d^{5}$

The electronic configuration of the element Ag is:-

$[Kr]4d^{10}5s^1$

For, $Ag^{+}$ , 1 electron is lost, thus the configuration is:-

$[Kr]4d^{10}$

The electronic configuration of the element Co is:-

$[Ar]3d^{7}4s^2$

For, $Co^{3+}$ , 3 electrons are lost, thus the configuration is:-

$[Ar]3d^{6}$

7 0

3 years ago

Can someone please help me with this its about working safely in a lab

Greeley [361]

I is Gas under pressure.
D is Corrosive.
F is Harmful to environment.
C is oxidizing*.
A is Explosive.
E is Toxic.
H is Long term health hazard.
G is Moderate health hazard.
...That's all I know

8 0

2 years ago

Someone help me please i’ll give brainly

kompoz [17]

Answer:

Convection

Explanation:

▶ Convection is the transfer of heat through a gas or a liquid. The gas in this case would be the air passing through the heat and moving in a large quantity that then heats the hair.

It may be all of the above since the hair dryer is using both convection and conduction produce hot air but it says clearly so im assuming its Convection.

Brainly is appreciated! Hope I helped!

4 0

2 years ago