The lifetime of an electron in metastable state is ____ times more than an ordinary excited state.
Answer: Both B and C
Explanation
The lifetime of an electron in a metastable state is significantly longer than in an ordinary excited state, typically by 10³ to 10⁵ times.
Ordinary excited states have lifetimes on the order of 10⁻⁸ seconds.
Metastable states have lifetimes that can range from microseconds to milliseconds and even longer, being orders of magnitude longer than typical excited states.
Therefore, options like 10³ or 10⁵ are appropriate estimations for how much longer a metastable state lifetime is compared to an ordinary excited state.
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