Explanation:
When we move across a period then there occurs an increase in the number of electrons of atoms from left to right. These electrons are added to the same sub-shell.
For example, elements present in row 2 will have electrons present in n = 2 which is the highest energy level for row 2 elements.
Hence, there are different number of valence electrons present in the elements of a row.
Whereas when we move down a group then elements have same number of valence electrons. As a result, they tend to show similar chemical properties.
But since, there are no same number of valence electrons in the elements of a row. Hence, they do not show similar chemical properties. Therefore, elements of a row do not behave same in chemical reactions.
Thus, we can conclude that we disagree with the hypothesis given by the student.
B) steel rusting
C) paper burning
D) wood decaying
A physical change changes the state on object is in, making the answer A) iron melting. Since it's melting, it's going from solid to liquid.
Increasing the rate of the reverse reaction will cause a shift to the left.
Decreasing the rate of the forward reaction will cause a shift to the left.
Decreasing the rate of the reverse reaction will cause a shift to the right.
Answer: Option (2) is the correct answer.
Explanation:
According to LeChatelier principle, any change in the equilibrium of a chemical reaction will result in shifting of equilibrium which is opposing the change.
Therefore, when we increase the rate of the reverse reaction that is, we move towards left side then this will actually cause a shift to the right hand side which is opposing the change.
Thus, we can conclude that increasing the rate of the reverse reaction will cause a shift to the left is not a result when a change to an equilibrium system is applied.
Answer:
Use the formula v=fλ Divide the velocity by the frequency to find the wavelength. (Make sure you add the unit λ for your final answer)
V: Velocity
F: Frequency
λ: Wavelength