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Helen [10]
3 years ago
12

1: Copper has an atomic number of 29

Chemistry
2 answers:
12345 [234]3 years ago
7 0
1) In 4 Copper atoms you will end up having 116 electrons.

<span>2) You can make 3 Copper atoms out of 87 protons.</span>
kap26 [50]3 years ago
3 0
1.) In 4 Copper atoms, you will have 116 electrons.

2.) You can make 3 Copper atoms out of 87 protons.
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Question 8<br> What is the effective nuclear charge for a 2nd row electron in sulfur
miss Akunina [59]

Answer:

The effective nuclear charge for a 2nd row electron in Sulfur is +8

Explanation:

Zeff = Z (# of protons) - S (# of shielded electrons)

Since there are 8 electrons in the first and second rows combined, there are 8 shielding electrons.

The number of protons in Sulfur is 16.

Therefore,

Zeff = 16 - 8

Zeff = 8

(It's been awhile, so I am not 100% sure)

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2 years ago
The question is in the photo
Stels [109]

Answer:

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Explanation:

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3 years ago
Why are animal vaccinated?
juin [17]

Answer:

to go against dangerous viral and bacteria

Explanation:

5 0
3 years ago
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What state of matter has a definite shape and volume.
anastassius [24]

Solids have a definite shape and volume. They are always the same shape no matter what they are contained in; their volume is also the same because they don't change unless you add or take away from it.

____________________________________________________________

Liquids have an indefinite shape but definite volume. They expand to fill out the space they are contained in, but their volume doesn't change unless you take out or add more of the liquid.

Gases have an indefinite shape and volume. Gases expand to fill out the space they are in and also don't have a clear shape because they are not always in one form.

3 0
3 years ago
The atomic symbol Superscript 206 subscript 82 upper P b. represents lead-206 (Pb-206), an isotope that has 82 protons and 124 n
Serggg [28]

Answer:

\left \{ {{y=206} \atop {x=82}}Pb \right.

Explanation:

isotopes are various forms of same elements with different atomic number but different mass number.

Radioactivity is the emission of rays or particles from an atom to produce a new nuclei. There are various forms of radioactive emissions which are

  • Alpha particle emission  \left \{ {{y=4} \atop {x=2}}He \right.
  • Beta particle emission    \left \{ {{y=0} \atop {x=-1}}e \right.
  • gamma radiation             \left \{ {{y=0} \atop {x=0}}γ \right.

in the problem the product formed after radiation was Pb-206. isotopes of lead include Pb-204, Pb-206, Pb-207, Pb-208. they all have atomic number 82. which means the radiation cannot be ∝ or β since both radiations will alter the atomic number of the parent nucleus.

Only gamma radiation with \left \{ {{y=0} \atop {x=0}}γ \right. will produce a Pb-206 of atomic number 82 and mass number 206 , since gamma ray have 0 mass and has 0 atomic number.equation is shown below

\left \{ {{y=206} \atop {x=82}}Pb\right ⇒ \left \{ {{y=206} \atop {x=82}}Pb\right +  \left \{ {{y=0} \atop {x=0}}γ\right.

Thus the atomic symbol is \left \{ {{y=206} \atop {x=82}}Pb\right

8 0
3 years ago
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