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BigorU [14]
3 years ago
14

URGENT: Identify the subatomic particles that determine the atomic number of an element.

Chemistry
1 answer:
Sedbober [7]3 years ago
8 0

Answer:

the number of protons determines the atomic number

Explanation:

Ex. Aluminum has 13 protons, so it's atomic number is 13

hope this helps :)

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No, xenon will not react on Nitrogen because xenon only reacts with oxygen and fluorine. Xenon only reacts with the 2 elements because these 2 elements contain a strong electronegative element which is high in energy barrier that can move the electrons inside xenon elements.  Xenon is an element with a symbol of Xe, it is odorless and colorless gas. Common uses of xenon are flash lamps and arc lamps. Xenon is a luminous element, it glows when placed near to high voltage electric field.
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What is the metal that is grouped with metalloids
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A sheet of aluminum foil has a total area of 1.000 m2 and a mass of 3.636 g. What is the thickness of the sheet in millimeters?
olga2289 [7]

Answer:

t=1.34\times 10^{-3}\ mm

Explanation:

Given that,

Area of sheet of Aluminium foil is 1 m²

Mass of the sheet = 3.636 g

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We need to find the thickness of the sheet in millimeters.

The density of an object is given in terms of its mass and volume as follows :

d=\dfrac{m}{V}

V = volume, V = A×t, t = thickness of the sheet

So,

d=\dfrac{m}{A\times t}\\\\t=\dfrac{m}{Ad}\\\\t=\dfrac{3.636\ g}{10000\ cm^2\times 2.699\ g/cm^3}\\\\t=0.000134\ cm

Since, 1 cm = 10 mm

So,

t = 0.00134 mm

or

t=1.34\times 10^{-3}\ mm

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