Answer:
periods 3-5
Explanation:
If you know your periodic table well, this is simple. but to explain it, periods 3-5 have elements that have electrons that fill the s, p and d orbitals. if you do not know, the s orbital starts off with the first period and the second period until you get totto the right side which is where the o block starts. the block is all of the transition metals and they all fill the s and p or ital as well.
Hydrogen and then its helium
Ek = 1/2 mv^2
9 × 10^4 = 1/2 × 800 × v^2
9 × 10^4/400 = 400 v^2 / 400
9 × 10^4/400 = v^2
√225 = v
15 ms⁻¹ = v
That's the only way I know how to work it out
I think in this case velocity and speed would be considered the same because me
s = d/t and v=d/t
one is distance travelled and the other is displacement of a body
Answer:
The answer here would be its "Magnitude".
