Answer:
D. The valence electrons of the larger atoms are farther from the nucleus and are easier to remove, so the metals near the bottom are more reactive than those at the top.
Explanation:
Option D is the correct answer because when we move down the group the sizes of the atoms increases, as a result of that, the valence electrons are far from the nucleus. This will make it easier for the valence electrons to be removed because the force of attraction between the nucleus and the valence electron decreases; so they are less tightly bound.
Therefore, the metals near the bottom are more reactive than those at the top i.e reactivity increases as you go down the group.
Algae can be used for energy, but you would have to keep growing more so you woundnt run out. You must do that for any energy source.
She wouldnt feel comfortable knowing that her research would lead to so many deaths. The last thing that she was expecting for, coming out of her, was something that causes conflicts in the world and ends with so many lives. So for me she would feel bad and guilty.
Answer:
Agriculture is a labour intensive activity. Labour costs are increasing and the working hours are decreasing and the quality of the labour is decreasing. So day by day to attend the agriculture operations becoming difficult. The tools or the machines removes the drudgery in agriculture operations.
Explanation:
