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3 years ago

How many valence electrons are in Tc

1 answer:

3 0

Tc is Technetium, and it has an atomic number of 43. Its atomic configuration is [Kr] 5s(1) 4d(5) [I'm on my phone so I can't do numbers on shoulders, pretend that 1 and 5 are on the s and d's shoulder]
The outside most ring is the 4d(5), and the d orbital can hold ten electrons.
Valence electrons are electrons, in you could say the outside ring that isn't filled, the extra ones. In this case, there are 5.

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Ber [7]

Answer:

=8 atoms

Explanation:

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3 years ago

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Dahasolnce [82]

Just choice D.
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2 years ago

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Sonja [21]

Answer:

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2 years ago

How much is 1 mole of salt or NaCl

Alexandra [31]

Hi there!

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One mole of salt will be the equivalent to 58 grams

Hope this helped!~

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2 years ago