Multiple Choice
Write the ground-state electron configuration of a europium atom.
A) [Xe]5d76s2
B) [Xe]4f25d56s2
C) [Xe]4f9
D) [Xe]4f76s2
E) [Xe]4f55d26s2
Correct Answer:

Verified
Correct Answer:
Verified
Q33: Which of the following subshells cannot exist
Q45: Which of the following has the largest
Q49: Because of fluorine's high electronegativity, less energy
Q50: All the following are metalloids except:<br>A) B.<br>B)
Q51: Write the ground-state electron configuration of Ru<sup>2+</sup>.<br>A)
Q85: Which atom has the highest second ionization
Q88: Write the ground-state electron configuration of Sb.<br>A)[Kr]4d<sup>8</sup>5s<sup>1</sup>5p<sup>3
Q95: Si<sup>4+</sup> is isoelectronic with which of the
Q95: Write the ground-state electron configuration of Fe<sup>3+</sup>.<br>A)[Ar]3d<sup>5</sup>4s<sup>2</sup><br>B)[Ar]3d<sup>3</sup>4s<sup>2</sup><br>C)[Ar]3d<sup>3</sup>4s<sup>0</sup><br>D)[Ar]3d<sup>6</sup>4s<sup>1</sup><br>E)[Ar]3d<sup>3</sup>4s<sup>3</sup>
Q115: All the following can have the ground-state