Answer:
1s2 2s2 2p6 3s2 3p6 3d6 4s2
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Answer:
Allium vegetables. Even if you haven't heard the term “allium” before, you're probably a lot more familiar with these vegetables than you think!
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Answer:
Hello
12 grams
The mass of one mole of carbon-12 atoms is 12 grams.
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Explanation:
Answer:
Caesium (55Cs) has 40 known isotopes, making it, along with barium and mercury, one of the elements with the most isotopes. The atomic masses of these isotopes range from 112 to 151. Only one isotope, 133Cs, is stable. The longest-lived radioisotopes are 135Cs with a half-life of 2.3 million years, ... It constitutes most of the radioactivity still left from the Chernobyl accident ...
