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ExtremeBDS [4]
3 years ago
13

Classify the elements as diatomic or monatomic. If necessary, refer to the periodic table to help you identify the diatomic elem

ents.
carbon

helium

hydrogen

iodine

oxygen

sodium

​

Chemistry
2 answers:
Oksanka [162]3 years ago
6 0

Answer:

Carbon: Monatomic

Helium: Monatomic

Hydrogen: Diatomic

Iodine: Diatomic

Oxygen: Diatomic

Sodium: Monatomic

Explanation:

There you go

gladu [14]3 years ago
3 0

Answer:

carbon- monatomic

helium- monatomic

hydrogen- diatomic

iodine- diatomic

oxygen- diatomic

sodium- monatomic

Explanation:

the diatomic elements can be remembered with this sentence:

Have No Fear Of Ice Clear Brownies

have- hydrogen

no- nitrogen

fear- fluorine

of- oxygen

ice- iodine

clear- chlorine

brownies- bromine

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the correct answer is A

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7 0
3 years ago
There are ______ electrons, _______ protons, and ______ neutrons in an atom of .
Georgia [21]

There are 54 electrons, 54 protons, and 78 neutrons in an atom of 132 Xe.54.

Xenon is a chemical element with the symbol Xe and atomic number 54. It is a colourless, dense, odourless noble gas found in Earth's atmosphere in trace amounts.

Although generally unreactive, it can undergo a few chemical reactions such as the formation of xenon hexafluoroplatinate, the first noble gas compound to be synthesized.

Solid xenon changes from face-centred cubic (fcc) to hexagonal close packed (hcp) crystal phase under pressure and begins to turn metallic at about 140 GPa, with no noticeable volume change in the hcp phase. It is completely metallic at 155 GPa.

When metallized, xenon appears sky blue because it absorbs red light and transmits other visible frequencies. Such behaviour is unusual for a metal and is explained by the relatively small width of the electron bands in that state.

Full question :

Q. There are ________ electrons,_______ protons, and ______ neutrons in an atom of 132 Xe.54.

a) 78 78 132

b) 54 54 78

c) 54 54 132

d) 78 78 54

e)132 132 54

Learn more about Xenon here : brainly.com/question/124136

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7 0
2 years ago
A piece of metal with a mass of 611 g is placed into a graduated cylinder that contains 25.1 mL of water rising the water level
djyliett [7]

Answer:

The answer is

<h2>2.64 g/mL</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume}  \\

From the question

mass = 611 g

volume = final volume of water - initial volume of water

volume = 256.7 - 25.1 = 231.6 mL

The density of the metal is

density =  \frac{611}{231.6}  \\  = 2.638169257...

We have the final answer as

<h3>2.64 g/mL</h3>

Hope this helps you

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I know I think it’s a A

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aliya0001 [1]
Acid and base reactions example is: acid+base=salt+water
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