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Papessa [141]
2 years ago
11

Select the statement(s) that explain(s) the relationship between the arrangement of elements by size and first ionization energy

.a. The two arrangements are the same because IE of elements increases from left to right and the radii of elements decreases from left to right.b. The first set of paired electrons in a p subshell experience a large amount of electron-electron repulsion, making the fourth electron in a p subshell easy to remove.c. A full s subshell is able to shield a newly filled p subshell from the nucleus, making the first electron in a p subshell easy to remove.d. The third unpaired electron in a p subshell causes a lot of electron-electron repulsion among the orbitals, making the third electron in a p subshell easy to remove.e. A p subshell with only one unpaired electron is extremely stable, making the fifth electron in a p subshell easy to remove.
Chemistry
2 answers:
kow [346]2 years ago
8 0

c. A full s subshell is able to shield a newly filled p subshell from the nucleus, making the first electron in a p subshell easy to remove.

Explanation:

From the given options, a full s-sublevel is able to shield a newly filled p-subshell from the nucleus thereby making the first electron in a p-subshell easy to remove is correct.

What is ionization energy?

Ionization energy is a measure of the readiness of an atom to lose an electron.

First ionization energy is the energy required to remove the most loosely held electron in the gas phase.

The size of an atom/element depends on the number of electrons it contains. The more the electrons, the larger its size.

  • The larger an atom becomes the lesser the ionization energy needed to remove the first electron from its outermost shell.

Electron - electron repulsion occurs when two electrons in the same sub-level repels one another.

Shielding effect is the ability of the inner electrons to protect the outer electrons from the pull of the nuclear charge.

In option C, a s-subshell has a greater shielding effect than the p,d and f sub-shell in that order.

A newly introduced electron in the p-sublevel will be loosely held and easier to remove.

Learn more:

First ionization energy brainly.com/question/2153804

#learnwithBrainly

quester [9]2 years ago
5 0

c. A full s subshell is ready to shield a newly filled p subshell from the nucleus, making the primary electron in an exceedingly p subshell easy to get rid of.

<h2>Further explanation </h2>

From the given options, a full s-sublevel {is able|is in an exceedingly position|is ready} to shield a newly filled p-subshell from the nucleus thereby making the primary electron in a p-subshell easy to get rid of is correct.

<h3>What is ionization energy? </h3>

Ionization energy may be a measure of the readiness of an atom to lose an electron.  First ionization energy is that the energy required to get rid of the foremost loosely held electron within the gas phase.  The size of an atom/element depends on the number of electrons it contains. The more the electrons, the larger its size.  The larger an atom becomes the lesser the ionization energy needed to get rid of the primary electron from its outermost shell.  Electron-electron repulsion occurs when two electrons within the same sub-level repel each other.  The shielding effect is the ability of the inner electrons to shield the outer electrons from the pull of the nuclear charge.

In option C, an s-subshell contains a greater shielding effect than the p,d, and f sub-shell therein order. A newly introduced electron within the p-sublevel is going to be loosely held and easier to get rid of.

Learn More

ionization energy  brainly.com/question/13811443

Electron-electron brainly.com/question/13811443

Details

Class: College

Subject: Chemistry

Keywords: ionization, energy, electron

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An ion with 5 protons, 6 neutrons and a charge of 3+ has an atomic number of ____.
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Answer:An ion with 5 protons, 6 neutrons and a charge of 3+ has an atomic number of 5

Explanation:

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1 year ago
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If a 300.0 ml sample of a gas is heated at constant pressure from 25.0ºc to 55.0ºc, its new volume is _____ ml?
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 The new  volume is    330.2 ml


<u><em>calculation</em></u>

 The new  volume is  calculated using  the Charles  law formula

that is  V1/T1= V2/T2

where T1= 25.0  c  into kelvin  =  25 +273  = 298 K

         V1=  300.0 ml

       T2  = 55.0  c  into kelvin = 273   +55  =328  K

      V2 =  ? ml


make V2  the   subject of the formula  by  multiplying  both side by T2

V2= V1T2/ T1

V2 =[ (300.0 ml x 328 k)  / 298 k}  = 330.2 ml


8 0
2 years ago
0.9775 grams of an unknown compound is dissolved in 50.0 ml of water. Initially the water temperature is 22.3 degrees Celsius. A
elena-14-01-66 [18.8K]

Answer:

The enthlapy of solution is -55.23 kJ/mol.

Explanation:

Mass of water = m

Density of water = 1 g/mL

Volume of water = 50.0 mL

m = Density of water × Volume of water = 1 g/mL × 50.0 mL=50.0 g

Change in temperature of the water ,ΔT= 27.0°C - 22.3°C = 4.7°C

Heat capacity of water,c =4.186 J/g°C

Heat gained by the water when an unknown compound is dissolved be Q

Q= mcΔT

Q=50.0 g\times 4.186 J/g^oC\times 4.7^oC=983.71 J

heat released when 0.9775 grams of an unknown compound is dissolved in water will be same as that heat gained by water.

Q'=-Q

Q'= -983.71 J =-0.98371 kJ

Moles of unknown compound = \frac{0.9975 g}{56 g/mol}=0.01781 mol

The enthlapy of solution :

\frac{Q'}{moles}

=\frac{-0.98371 kJ}{0.01781 mol}=-55.23 kJ/mol

The enthlapy of solution is -55.23 kJ/mol.

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2 years ago
as a result of chemical weathering, even a hard rock such as granite can be turned into __________. a) sediment b) limestone c)
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One of the commercial uses of sulfuric acid is the production of calcium sulfate and phosphoric acid. If 19.9 g of Ca₃(PO₄)₂ rea
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57.5 % is the percent yield if 10.9 g of H₃PO₄ is formed.

Explanation:

Balanced equation for the reaction:

Ca₃(PO₄)₂ (s) + 2H₂SO₄ (aq) → H₃PO₄ (aq) + 2CaSO₄ (aq)

data given:

mass of Ca₃(PO₄)₂ = 19.9 grams

mass of  H₂SO₄, = 54.3 grams

mass of H₃PO₄ produced = 10.9 grams (actual yield)

percent yield=?

atomic mass of Ca₃(PO₄)₂  = 310.17 grams/mole

atomic mass of H₂SO₄ = 98.07 grams/mole

number of moles is calculated as:

number of moles  = \frac{mass}{atomic mass of one mole}

putting the values in the above equation:

for Ca₃(PO₄)₂  = \frac{19.9}{310.17}

                        = 0.064 moles

moles of H₂SO₄ = \frac{54.3}{98.07}

                            = 0.55 moles

from the reaction, it can be found that the limiting reagent is Ca₃(PO₄)₂

1 mole of Ca₃(PO₄)₂ reacts to form 1 mole of phosphoric acid

0.064 moles of  Ca₃(PO₄)₂ will produce x moles of phosphoric acid

0.064 moles of phosphoric acid produced

mass = number of moles x atomic mass of  H3PO4

             =0.064 x 97.994

           = 6.27 grams (theoretical yield)

FORMULA FOR PERCENT YIELD:

percent yield = \frac{actual yield}{theoretical yield} x 100

                      = \frac{6.27}{10.9} x 100

                       = 57.5 %

7 0
2 years ago
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