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Umnica [9.8K]
4 years ago
8

As we move from left to right across the periodic table, what is the general trend? A) Atomic radii increase. B) Electronegaviti

y decreases. C) Nuclear shielding increases. D) Metallic character decreases.
Chemistry
2 answers:
inysia [295]4 years ago
5 0

Answer:

So it was D?

Thanks

Explanation:

elena55 [62]4 years ago
4 0

B. Electronegavitiy decreases

Electron affinity decreases as we proceed down a group.

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Are there particlez of matter that are smaller than atoms??? What are theses particles calling?????
Gre4nikov [31]
Yes, the ones that make of the atom itself. The proton which is a positive charge which has most of the weight of the atom and is found in the nucleus. The neutron which weighs almost nothing has a neutral charge and is found in the nucleus with the protons. Lastly the electrons which have a negative charge and orbit the atom in the electron cloud around the nucleus and also weigh very little.
6 0
3 years ago
A sample of an ionic compound that is often used as a dough conditioner is analyzed and found to contain 4.628 g of potassium, 9
Roman55 [17]

Answer:

The empirical formula of the compound is = KBrO_3

The name of the compound is potassium bromate.

Explanation:

Mass of potassium = 4.628 g

Moles of potassium = \frac{4.628 g}{39 g/mol}=0.1187 mol

Mass of bromine = 9.457 g

Moles of bromine = \frac{9.457 g}{80 g/mol}=0.1182 mol

Mass of oxygen = 5.681 g

Moles of oxygen = \frac{5.681 g}{16 g/mol}0.3551

For empirical formula of the compound, divide the least number of moles from all the moles of elements present in the compound:

Potassium :

\frac{0.1187 mol}{0.1182 mol}=1.0

Bromine;

\frac{0.1182 mol}{0.1182 mol}=1.0

Oxygen ;

\frac{0.3551 mol}{0.1182 mol}=3.0

The empirical formula of the compound is = KBrO_3

The name of the compound is potassium bromate.

5 0
3 years ago
Please help this is due soon and I’ll mark you brainiest if you can help
attashe74 [19]

Answer:

I think it's either A or D I'm not sure hope that I helped you.

7 0
3 years ago
Write a balanced chemical equation describing the oxidation of the bromide ion by solid xenon trioxide to produce bromine liquid
ki77a [65]

Answer:

6Br⁻ + XeO₃ + 6H⁺ → 3Br₂ + Xe + 3H₂O  

Explanation:

First, we need to write the half-reactions:

2Br⁻ → Br₂ + 2e⁻ Oxidation -Balanced yet-

XeO₃ →  Xe Reduction

To balance the reduction in acidic aqueous solution we need to add waters in the other side of the reaction as oxygens are present:

XeO₃ →  Xe + 3H₂O

And H⁺ as hydrogens from water we have:

XeO₃ + 6H⁺ →  Xe + 3H₂O

To balance the charge:

<h3>XeO₃ + 6H⁺ + 6e⁻ →  Xe + 3H₂O  Reduction -Balanced-</h3><h3 />

To cancel out the electrons of both half-reaction we need to multiply oxidation 3 times:

6Br⁻ → 3Br₂ + 6e⁻

XeO₃ + 6H⁺ + 6e⁻ →  Xe + 3H₂O  

And the balanced reaction in acidic aqueous solution is the sum of both half-reactions:

<h3>6Br⁻ + XeO₃ + 6H⁺ → 3Br₂ + Xe + 3H₂O  </h3>
5 0
3 years ago
Which of the following is the correct measurement for the volume of liquid shown below?
mr Goodwill [35]

Answer:

A. 3.5ml

Explanation:

lowest point of liquid or meniscus

5 0
3 years ago
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