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3 years ago

Which element in the third period would you expect to have the larger atomic radius, sodium (Na) or Sulfur (S)?

Chemistry

2 answers:

jeyben [28]3 years ago

7 0

Answer: The correct answer is Option B.

Explanation:

The given elements that is sodium and sulfur are the elements which belong to the same period that is third period.

As, the electrons are added up to the same shell across a period, the number of protons also increase and hence, they attract the electrons more effectively. This means that the effective nuclear charge also increases and the size of the sulfur thus shrink and hence, the size (atomic radius) of sodium is the largest amongst third period.

Therefore, the correct answer is Option B.

Doss [256]3 years ago

3 0

Answer:

Explanation:

As, the electrons are added up to the same shell across a period, the number of protons also increase and hence, they attract the electrons more effectively. This means that the effective nuclear charge also increases and the size of the sulfur thus shrink and hence, the size (atomic radius) of sodium is the largest amongst third period.

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Imagine that you have many U-235 atoms and you fire a neutron at one of them. What do you think will happen?

Damm [24]

The correct answer is Release of large amount of heat and radiation.

U-235, which makes up just over 0.7% of natural uranium, is relatively uncommon; uranium is nearly 100 times more frequent than silver.Because uranium-235, one of the radioactive metal's isotopes, is the only naturally occurring isotope capable of supporting a nuclear fission process, radioactive metal is special. Nuclear power facilities, as well as the nuclear reactors that power ships and submarines, can be powered by uranium that has been "enriched" to have a higher proportion of U-235. In nuclear weapons, it can also be applied. Examples of extremely unstable fission fragments produced by uranium-235 fission events caused by neutron absorption include the barium and krypton nuclei. These pieces nearly instantly split into barium-144 and krypton-89 by releasing three neutrons between them.

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brainly.com/question/19382367

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2 years ago

Which group is more reactive than the alkaline earth metals?

Vlad [161]

Answer: The alkali metals reactivity is generally higher than the alkaline earth metals.

Explanation: This makes the alkaline earth metals with their two valence electrons less reactive than alkali metals with their one valence electron.

Alkali metals is ns1 and alkaline earth metals is ns2

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3 years ago

Read 2 more answers

In chemical kinetics, the magnitude of the rate constant depends on: I. the reaction time of the chemical reaction II. the activ

Snowcat [4.5K]

Answer:

THE TEMPERATURE AT WHICH THE CHEMICAL REACTION IS BEING CONDUCTED.

Explanation:

The reaction rate constant is dependence on the temperature in which the reaction takes place. The rate of a reaction and the activation energy relationship is given by the Arrhenius equation with the rate constant as a function of temperature.

Mathematically, the rate constant is expressed as;

k(T) = Ae^-Ea/RT

where Ea is the activation energy, R is the gas constant, Ae is the pre-exponential factor and it is the frequency at which a reactant molecule collide with each other, T is the temperature.

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Explanation:

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3 years ago

Write the chemical equation for the formation of HI from the single, isolated H and I atoms.

mart [117]

Answer:

H2 + I2 → 2 HI.

Explanation:

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3 years ago