Chemistry, 23.07.2019 01:30 Tooey6225

According to the sixth postulate of the kinetic-molecular theory, a group of gas particles will have an average kinetic energy based on what?

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Since the molecules of gas are more spread out than the ones in liquid and solid, they have more kinetic energy in the free space between the molecules.

Answer from: nataliaguadaluoupa25

The answer is Temperature.

Explanation: The molecular kinetic theory describes the behavior and properties of gases. In particular, one of the postulates of this theory indicates that the average kinetic energy of the molecules of any gas is proportional to the temperature of the gas. This means the higher the temperature of the gas, the higher the kinetic energy of the particles.

Therefore, the average kinetic energy of gas particles will depend on the temperature.

Answer from: Quest

14,16 18 reacts with group

Answer from: Quest

assuming that your periodic table has eighteen columns, you should highlight the four elements in the third column from the left of the table.

explanation

neutral atoms of elements after calcium contain d electrons. the energy of d orbitals of a particular main shell lies between the energy of the s and p orbitals of the next main shell. for example, electrons in the $3d$ have energy higher than those in the $4 s$ orbital while lower than those of the $4 p$ orbital.

by the aufbau principle, electrons fill orbitals one at a time, starting from those of the lowest energy. the $4s$ orbital is therefore filled right after $3p$ orbitals and before $3 d$ orbitals.

potassium has electron configuration $[\text{ar}] 4 s^{1}$ and calcium $[\text{ar}] 4 s^{2}$ . the s orbital of a main shell holds a maximum of two electrons. the next element would thus have the electron configuration $[\text{ar}] 4 s^{2} \; 3d^{1}$ and satisfy the requirements.

a neutral atom of the element contains three electrons on top of the most recent noble gas element. it should thus be placed in the third column of the periodic table. both scandium and yttrium would satisfy the conditions. an aufbau diagram indicates that the 4f orbital is filled before the 5d. however, it appears that exceptions exists for both lanthanum and actinium. neutral atoms of the two d-block elements also demonstrate the $ns^{2} \; (n-1) p^{1}$ and should be highlighted as well.

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According to the sixth postulate of the kinetic-molecular theory, a group of gas particles will have...