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LUCKY_DIMON [66]
3 years ago
15

In the space provided, for each element, type the ionic charge of an atom with a full set of valence electrons. Then, type the n

ame of the noble gas with the same electron configuration. Type in the following order: charge, then noble gas. For example, chlorine (atomic number 17) has an ionized charge of 1-, and the noble gas with the same electron configuration is argon.
11. lithium (atomic number 3)
12. oxygen (atomic number 8)
13. aluminum (atomic number 13)
Chemistry
1 answer:
kobusy [5.1K]3 years ago
3 0

11. ionic charge +1, helium.

12. ionic charge 2-, neon.

13. ionic charge 3+, neon.

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According to Dalton's atomic theory, matter is made up of atoms which are inseparable and can not be destroyed further. For a given element, all atoms have identical mass and properties. Atoms of two different elements combine to form compounds and rearrangement of these atoms results in chemical reaction.


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What mass of f2 is needed to produce 120. g of pf3 if the reaction has a 78.1% yield?
lesya692 [45]

write the equation for the reaction

that is 6 F2 +P4 =4 PF3

find the theoretical mass that is

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theoretical yield = 78.1/100 = 120/y

y= 153.6 grams

find the number of moles of  PF3

moles = mass/molar mass

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by use of mole ratio between  F2 :PF3 which is 6:4 the moles of F2 is therefore= 1.746 x 6/4 = 2.62 moles

mass = moles x molar mass

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6 0
3 years ago
What does an atom become if it gains or loses electrons?
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3 0
3 years ago
why are plasmas of great interest to scientists or manufacturers. descride 2 current uses of plasmas and describe 1 way scientis
Helga [31]

<u>Answer:</u>

<u>Plasmas of great interest to scientists or manufacturers as</u>

  • Plasma is electrically charged gases that contain considerable charged particles that can change the behavior of the substance.

<u>Current uses of plasmas:</u>

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<u>Way scientists and engineers hope to use plasmas in the future:</u>

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6 0
3 years ago
I need this ASAP thank you
Rainbow [258]

Answer:

16,,24Mg 17,,a24.1 18a mass number of the most abundant isotope

Explanation:

atomic number of Mg is 12 ,therefore its mass number should be the value that is very close to 24.

24.1 is the value of thee most abundant isotope.

8 0
2 years ago
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