Answer:
Explanation:
When going from top to bottom in any group of the periodic table, the atomic radius always tends to increase
Well i do think they're the same.
Impure substance, because pure would be dirt from the earth
Answer:

Explanation:
Given that
Mass ,m= 8.8 x 10¹³
Speed ,v= 33 km/s
We know that 1 km= 1000 m
v= 33 x 10³ m/s
As we know that kinetic energy given as

Now by putting the values in the above equation


Therefore we can say that the kinetic energy will be
