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Svetradugi [14.3K]

3 years ago

11

Consider the two electron arrangements for neutral atoms A and B. Are atoms A and B the same element? A - 1s2, 2s2, 2p6, 3s1 B -

1s2, 2s2, 2p6, 5s1 no yes indeterminate

1 answer:

iogann1982 [59]3 years ago

3 0

✨✨✨✨✨✨✨✨✨✨✨✨

<h2><em><u>Technically yes but no because you have to fill the 3s orbital before the 5s orbital</u></em></h2>

<em><u>✨</u></em><em><u>✨</u></em><em><u>✨</u></em><em><u>✨</u></em><em><u>✨</u></em><em><u>✨</u></em><em><u>✨</u></em><em><u>✨</u></em><em><u>✨</u></em><em><u>✨</u></em><em><u>✨</u></em><em><u>✨</u></em>

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4 years ago

If you have 222 g of radioisotope with a half-life of 5 days, how much isotope would remain after 15 days?

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If the half life is 5 days, you would have to divide 222 by 2 3 times.
so 222/2 =111g
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after four half life the mass would be
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the percent would be
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