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PollyB2759
17.05.2021 •
Chemistry
According to collision theory, which of the following statements explain why an increase in temperature increases the rate of a chemical reaction? (Select all that apply.)
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Ответ:
The reactant particles have a greater average kinetic energy.
A smaller fraction of the reactant particles have energy greater than the Ea.
Ответ:
2 lone pairs of electrons
Explanation:
In this case, the central atom is oxygen. If we check the periodic table we will have an atomic number of 8. So, the electronic configuration would be:
We have 6 electrons in the last level. Therefore, we have 6 valence electrons. For the hydrogens, we will have only 1 electron each. So, in total, we have 8 electrons.
With this in mind, we have to draw two lone pairs in the oxygen and 1 bond with each hydrogen.
See figure 1.
I hope it helps!