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3 years ago

Using only the periodic table, determine the element that displays each given trend. Be sure to provide your reasoning.

Chemistry

1 answer:

RideAnS [48]3 years ago

3 0

Choose the element that:

- is more reactive: oxygen or argon.

- has the larger atomic radius: francium or sodium.

- has the smaller atomic radius: scandium or selenium.

- has more ionization energy: bismuth or mercury.

- has less ionization energy: nitrogen or phosphorus.

- has more electronegativity: xenon or silver.

- has less electronegativity: titanium or hafnium.

Explanation:

Choose the element that is more reactive: oxygen or argon.

Argon have a complete electronic shell which makes him inert from chemically point of view while oxygen is able to form compounds with the majority of the elements.

Choose the element that has the larger atomic radius: francium or sodium.

As you go down in a group the atomic radius is increasing.

Choose the element that has the smaller atomic radius: scandium or selenium.

As a general trend the atomic radius of elements decrease in periods from right to left for this elements .

Choose the element that has more ionization energy: bismuth or mercury.

Mercury have a complete electronic shell (5d¹⁰) while bismuth have 3 electrons in the last shell (6p³). It is harder to extract an electron from mercury compared to bismuth.

Choose the element that has less ionization energy: nitrogen or phosphorus.

Ionization energy decrease as you go down in a group.

Choose the element that has more electronegativity: xenon or silver.

Silver have a higher electronegativity than Xenon. Xenon is an inert gas and it has a complete electronic shell which explains his inert chemical reactivity.

Choose the element that has less electronegativity: titanium or hafnium.

As you go down a grup electronegativity is decreasing.

Learn more about:

trends in periodic table:

brainly.com/question/2293240

brainly.com/question/4433739

brainly.com/question/3266672

#learnwithBrainly

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2 years ago

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Answer:

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Explanation:

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2 years ago

2. What's the kinetic energy of an object that has a mass of 12 kilograms and moves with a velocity of 10 m/s?

Dennis_Churaev [7]

<h2>Let us solve for it </h2>

Explanation:

Energy

It is ability to do work .

There are so many forms of energy .

out of which mechanical energy is also one of the form .

Mechanical energy

It is the energy possessed by the body by virtue of its motion and state .

It is of two types :

Kinetic energy
Potential energy

Kinetic energy

It is the energy possessed by the body by virtue of its motion .

Its expression is :

K.E=1/2mv²

Here in above question it is given that :

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3 years ago

What term refers to elements in group 18 that only react with other elements under special laboratory conditions?

Savatey [412]

Answer:

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Explanation:

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3 years ago

Read 2 more answers

The density of an equal-mass water 1 ethanol mixture is 0.913 g/cc at 20°C. If the density of water is 0.998 g/cm3 and ethanol i

zhannawk [14.2K]

Answer:

Since water and ethanol have the same mass, there is an excess of positive volume at a temperature of 20°C

Explanation:

The component 1 refers to water and the component 2 refers to ethanol. The molar volume is

$V_{ethanol} =\frac{m_{ethanol} }{p_{ethanol} } =\frac{46.06}{0.789} =58.37cm^{3} /mol\\V_{water} =\frac{m_{water} }{p_{water} } =\frac{18}{0.998} =18.03cm^{3} /mol$

The excess volume is

$V_{E} =\frac{x_{1}m_{1}+x_{2}m_{2} }{p_{m} } -x_{1}V_{1} -x_{2} V_{2}$

Where xn are the mole fraction of water and ethanol, pm is the density of the mixture.

$V_{E} =\frac{(0.5*18)+(0.5*46.06)}{0.913} -(0.5*18.03)-(0.5*58.37)=55.3cm^{3}$

of the results, since water and ethanol have the same mass, there is an excess of positive volume at a temperature of 20°C

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3 years ago