The principal quantum number of the first d shell is three. The principal quantum number determines the size of the orbital. The secondary divides the shell into subshells called orbitals and designated by the letters s, p, d, f. From the sequence of the electron configuration, it can be seen that at a principal quantum number of three the d shell first appear.
Answer: 3.5e+6 ; 0.0000035
Explanation: Weird question but this is the answer
Answer:
B is most volatile, A is least volatile
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Answer:
it is nanometers the third one
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