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What element has the electron configuration 1s22s22p63s23p64s23d6?

In the movie Rainman, Dustin Hoffman’s character performs mind-boggling mathematical calculations, yet he cannot perform a simple task such as determining how much change he would receive when buying a candy bar. This character is demonstrating:

Manual is teaching his 3-year-old son Joey the alphabet song. Joey sings “A B C D J R P X Y Z.” This is an example of:

One element that has 7 valence electrons is ________.

After the Greenway family accepted their neighbor’s invitation to Thanksgiving dinner, Mrs. Greenway felt obligated to invite the neighbors to Christmas dinner. Mrs. Greenway’s sense of obligation most likely resulted from

Of the following, which is an infectious disease associated with splenomegaly?    

The adrenal glands consist of two parts:      

Which of the following GI pathologies would not cause a target sign on sonography?    

Sonographic visualization of a non-compressible appendix greater than ___________ in diameter is highly suggestive of acute appendicitis.

When locating the appendix, one should draw an imaginary line from the anterosuperior iliac spine (ASIS) to the umbilicus. The midpoint of this line is called: