The answer is 0.365:100.
v/c ratio represents ratio of speed of an electron (v) to the speed of light (c).
How is the speed of an electron calculated?
- The speed of an electron (v) is given by Bohr's model as-

Now, for the first excited state, n = 2.
e - Charge of electron =
×
C
h - Plank's constant =
×
ε₀- permittivity
×

- Put the above data in the formula-

- Now, the speed of light, c =
×
- Thus, the v/c ratio for an electron in the first excited state is calculated as-
= 
- Hence, the v/c ratio = 0.365:100.
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I don’t know if ur Answer is correct you have a lot of O. But the answer would be : They are shiny and bend without breaking.
Answer:
an ion is an element that carries either positive or negative charge. the example are cation which has a positive charge e.g H+ and anion which had a negative charge eg Cl-.
Plasma forms when a gas reaches extremely high temperatures
It's not an element or a compound because it's not pure or something like oxygen... it is a homogeneous mixture like tea and sugar