Which element does the electron configuration 1s2 2s2 2p2 represent B C N K
2 answers:
<u>Answer:</u> The given configuration represents carbon atom.
<u>Explanation:</u>
Electronic configuration tells us about the number of electrons that are present in an atom. It also determines the atomic number of an element.
For the given electronic configuration =
Total number of electrons = 2 + 2 + 2 = 6
The element which has atomic number '6' is carbon atom.
Hence, the given configuration represents carbon atom.
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Answer:
Concentration of solution B is
Explanation:
Solution A: Total volume of solution A = (9.00+1.00) mL = 10.00 mL
According to law of dilution,
where and
are initial and final concentration respectively.
and
are initial and final volume respectively.
Here =
,
= 1.00 mL,
= 10.00 mL
So, =
So, concentration of solution A =
Solution B: Total volume of solution B = (2.00+8.00) mL = 10.00 mL
Similarly as above, =
So, concentration of solution B =