<span>The electronegativity of an element indicates how strongly the element can attract electrons.</span>
1) 55Fe has 29 neutrons, 58Fe has 31 neutrons (difference of three neutrons).
2)The configuration is incorrect for both of these reasons.
Answer:
C6H12O6 + 6O2 - 6CO2 + 6H2O + ENERGY
Explanation:
Let me know if I'm right
In many cases, elements that belong to the same group (vertical column) on the periodic table form ions with the same charge because they have the same number of valence electrons.
Answer:
a. The addition of NaOH produced the precipitate, Fe(OH)₃, which removed Fe³⁺ from the system. To reduce the stress of the removal of Fe³⁺ and to re-establish equilibrium, the system shifted to the left increasing [Fe³⁺] and decreasing the [Fe(SCN)²⁺]. Increasing the [Fe³⁺] produced a yellow colored solution.
Explanation:
- The addition of NaOH to the test tube contents will result a precipitate of Fe(OH)₃ which has a reddish brown ppt.
- So, this cause removal of Fe³⁺ which disturb the equilibrium.
- According to Le Chatelier's Principle: if the equilibrium of a reaction is disturbed by an external stress, the system will be shifted to the other directio to attain the equilibrium again.
- Thus, to reduce the stress of the removal of Fe³⁺ and to re-establish equilibrium, the system shifted to the left increasing [Fe³⁺] and decreasing the [Fe(SCN)²⁺].
- Increasing the [Fe³⁺] produced a yellow colored solution.
<em>So, the right choice is:</em>
a. The addition of NaOH produced the precipitate, Fe(OH)₃, which removed Fe³⁺ from the system. To reduce the stress of the removal of Fe³⁺ and to re-establish equilibrium, the system shifted to the left increasing [Fe³⁺] and decreasing the [Fe(SCN)²⁺]. Increasing the [Fe³⁺] produced a yellow colored solution.
