To determine the number of potassium laid side by side by a given distance, we simply divide the total distance to the diameter of each atom. The diameter is twice the radius of the atom. We calculate as follows:
number of atoms = 4770 / 231x10^-12 = 2.06x10^13 atoms
The number of animal balloons created in 15 minutes = 20
The number of animal balloons created in 1 minute = 
So, the number of animal balloons created in 6 minutes = 
And, the number of animal balloons created in 45 minutes = 
So, the solved ratio table will be:
Despite its appearance, air has a ‘thickness’ so when the sun is high in the sky the light travels through the air on a very much shorter path than when it is low on the horizon.
Imagine that air water and you are below the surface, the light from an overhead sun will be quite sharp and bright, but if lower in the sky it will have to travel through much more water to reach you, so will look less bright and sharp. It ma not seem the same, but the atmosphere is just like very thin water, and a low lying sun will be drastically reduced in strength, so all you will see is a sun with a shift to the red end of the spectrum as all the actinic part will be filtered away by that thicker atmosphere.
Answer:
B is krypton
Explanation:
Atomic radius increases when going down a group so Helium is smallest and radon is biggest.
