2 atoms of Al
3 of S
4*3=12 of O
so total= 17
Ra, would have the lowest ionization energy. Remember ionization energy increases going up and to the right.
Answer:
a)decrease
b)increase
c)smaller
d)smaller
Explanation:
Ionization energy decreases down the group due to increase in the atomic radius. The distance between the outermost electron and the nucleus increases hence the nuclear attraction for the outermost electrons become smaller and the ionization energy also become smaller as electrons are now easily removed from the outermost shell.
Hence the group of answer choices provided above.
Answer:
Velocity = 120 km/h in north
Speed = 120 km/h
Explanation:
Given data:
Distance = 300 km north
Time taken = 2.5 hr
Speed and velocity = ?
Solution:
Speed = distance / time
Speed = 300 km / 2.5 h
Speed = 120 km/h
Velocity = change in position / change in time
Velocity = 300 km north / 2.5 hr
Velocity = 120 km/h in north
Darwin's Theory of Evolution by Natural Selection.
Darwin divided this theory into multiple parts but overall it fits into Darwin's Theory of Evolution by Natural Selection, so that would be your answer.
In case you're wondering about the others:
1. Organisms produce more offspring than actually survive.
2. Every organism must struggle to survive.
3. There is variation within a species.
4. Some variations allow members of a species to survive and reproduce better than others.
5. Organisms that survive and reproduce pass their traits to their offspring, and the helpful traits gradually appear in more and more of the population.
(these are brief explanations, they go into more detail)
Good luck!
