1.Which diatomic molecule below would be useful in saying good-bye?
O2
N2
I2
Ta2
Li2
2.Which element is best for use in flash bulbs?
Mn
Mg
Cs
Ca
Sr
Magnesium is often used in old time flash bulbs, if they still exist.
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I have no idea on the first.
TaTa?
O2 for the first one!
To determine which diatomic molecule would be useful in saying goodbye, we need to identify a molecule whose name or symbol can be related to the word "goodbye."
Out of the options given: O2, N2, I2, Ta2, and Li2, the molecule that can be related to saying goodbye is O2.
The O in the molecule O2 can be pronounced as the letter "O," and when repeated twice, it sounds like "Goodbye." Hence, the answer is O2.
In the second question, we need to identify which element is best for use in flash bulbs. Magnesium (Mg) is commonly used in flash bulbs because it burns very brightly when ignited, producing intense white light.
Manganese (Mn), Cesium (Cs), Calcium (Ca), and Strontium (Sr) are not typically used in flash bulbs.