Answer: Option (E) is the correct answer.
Explanation:
When we move from top to bottom in a group then there occurs an increase in atomic size of the atoms due to increase in the number of electrons.
For example, in group 2A elements beryllium is the smallest in size whereas radium being at the bottom is the largest in size.
Also, atomic number of beryllium is 4 and atomic number of radium is 88.
Thus, we can conclude that out of the given options radium is the 2A element which has the largest atomic radius.
Answer:
1. B.10 mol/l
2. D.
3.A.
Explanation:
Totoo po yan ganyan po yong sakin
The only stable caesium isotope is 133Cs, with 78 neutrons.
Hope this answers your Q
Answer:
Plant and animal cells differ in that plants have a large central vacuole, while animals have smaller vacuoles. Plant cells also have cell walls and plastids, while animal cells do not.
