What is the order for filling the subshells with electrons? 4d, 4f, 5s, 5p, 6s.

Question

What is the order for filling the subshells with electrons? 4d, 4f, 5s, 5p, 6s. 4d, 4f, 5s, 5p, 6s 5s, 6s, 5p, 4d, 4f 5s, 4d, 5p, 6s, 4f 4d, 4f, 5p, 5s, 6s 6s, 5p, 5s, 4f, 4d Given the average bond energies listed below, estimate Delta H for the following reaction: H_2 (g) + Cl_2 (g) rightarrow 2HCl(g) Delta H_rms = ?? Average Bond energies: H-H 436 KJ/mol Cl-Cl 242 KJ/mol H-Cl 431 KJ/mol -246 KJ + 246 KJ +184 KJ -184 KJ none of these Given the three statements below, pick the best answer. (i) For the H atom, the energy states are dependent only on n. (ii) Knowing the values of n, l, m specifies an orbit. The highest energy electron for a K atom is located ina 4s orbital. (i) and (ii) are true, (iii) is not (ii) and (iii) are true, (i) is not (i) and (iii) are true, (ii) is not all three are true only (ii) is true Which of the following Orbital diagram for the ground state electronic configuration for a phosphorus atom is correct? Arrange the following elements in order of increasing ionization energy. (lowest IE) O

Explanation / Answer

9

we need the orbital diagram energy

the rule is that the least energy-requiring orbital will be filled first

so

the order:

5s < 4d < 5p < 6 s < 4 f

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