Zircon is special because it rejects lead (Pb) when hot, but has no issue incorporating radioactive uranium. A zircon crystal is extracted from a meteorite that fell to Earth. In the zircon, we find about 1 million 235U atoms and 127 million 207Pb atoms. Assume 235U decays to 207Pb with a half-life of 0.6 billion years. How long has it been since the meteorite cooled

ugh fiel iente of insistí is did kiwis jaj

a electronegativity decreases beacuse the size of nucleus is bigger.

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explanation:

because dgjpwojefopjwp

if the temperature drops and becomes cool

then the atmosphere can be freezing as the water vapor in the air is at maximum (100%) and can be severely cold

also can be snowing lightly as the moisture in the air will start to solidify

and btw this is not chemistry but