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garik1379 [7]
2 years ago
13

Why does atomic radii decrease as you move from the left to right across the period

Chemistry
2 answers:
wlad13 [49]2 years ago
6 0

When we move from left to right across the periodic table, we can see that the atomic radii keeps decreasing. This is because, as you move from left to right, the nucleus gains protons. The atomic number increases and hence the valence electron will feel more attracted towards the nucleus & the atomic radii will decrease.

\mathbb{MIREU}

artcher [175]2 years ago
5 0

Answer:

This is because, within a period or family of elements, all electrons are added to the same shell.

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Question 1 (2 points)
natulia [17]

Temperature is the average kinetic energy of gas molecules.

<h3>What is absolute zero?</h3>

The term absolute zero refers to the hypothetical point where the energy of molecules is zero. It is the point where all of their motion stops completely.

In a liquid, the movement of the molecules is more significant than in a solid. If you keep increasing the temperature of a liquid, it will boil and become a gas.

Matter contains energy which depends on the temperature of matter. To remove the energy of matter, you have to lowering its temperature.

The addition of energy to matter occurs when matter is heated. Hence, you add energy to matter by heating it.

The molecules at warm temperatures differ from the molecules at cool temperatures because the molecules at warmer temperatures move around more.

The air on a hot day compares to the air on a cool day in the sense that on a hot day, air molecules have more energy.

Temperature is depends on the kinetic energy of molecules. Hence, the best description of temperature is motion of molecules.

The temperature of a body is the average kinetic energy of its molecules.  When two things that are not touching have the same temperature their molecules move at the same average speed.

Since a liquid receives energy when it is heated, when the liquid is boiled beyond its boiling point, It will become a gas.

The difference between heat and temperature is that temperature measures the motion of molecules, and heat is the energy of that motion.

Learn more about temperature: brainly.com/question/15267055

3 0
3 years ago
Read 2 more answers
Please help! Thanks
trapecia [35]

Th actual yield of the reaction is 24.86 g

We'll begin by calculating the theoretical yield of the reaction.

2Na + Cl₂ → 2NaCl

Molar mass of Na = 23 g/mol

Mass of Na from the balanced equation = 2 × 23 = 46 g

Molar mass of NaCl = 23 + 35.5 = 58.5 g/mol

Mass of NaCl from the balanced = 2 × 58.5 = 117 g

From the balanced equation above,

46 g of Na reacted to produce 117 g of NaCl.

Therefore,

11.5 g of Na will react to produce = (11.5 × 117) / 46 = 29.25 g of NaCl.

Thus, the theoretical yield of NaCl is 29.25 g.

Finally, we shall determine the actual yield of NaCl.

  • Percentage yield = 85%
  • Theoretical yield = 29.25 g
  • Actual yield =?

Actual yield = Percent yield × Theoretical yield

Actual yield = 85% × 29.25

Actual yield = 0.85 × 29.25 g

Actual yield = 24.86 g

Learn more about stoichiometry: brainly.com/question/25899385

7 0
3 years ago
What is the mass in grams of 17.46 mL m L of acetone?
Crazy boy [7]

Answer:

17,46gram

Explanation:

because 1l is egal to kg

4 0
3 years ago
Read 2 more answers
What is the mass of 12,000cm3 of N2? Explain your answer?
Damm [24]

Answer:

14g

Explanation:

assuming that N2 is a gas, use the gas formula ( mole = volume/24) to find the number of moles

then once you have found the moles (0.5 mol) use the (mole = mass/mr) formula to find the mass

so, 0.5 x 28 = 14g

8 0
3 years ago
Which would slow down a reaction that is occurring in a solution at 25 degrees Celcius?
castortr0y [4]

Answer:

put the solution over ice.

5 0
3 years ago
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