How many 4d electrons are in Zr (Zirconium)?
There are two 4d electrons in Zr....
How many 4d electrons are in Y (Yytrium)?
There is one 4d electron in Yytrium....
Abundance of Elements
I came across this image, The Abundance of Elements, on Tumblr a few weeks ago and I’m still in love with it. Click here to view the full-size image....
Math & Romance: Calculating Dating Age Range
According to the “half-your-age-plus-seven” rule, it’s considered socially acceptable to date anyone that is as young as half your age plus seven years. To simplify this, here’s the equation...
Enter to Win $25 Amazon Gift Card + “The Disappearing Spoon” by Sam Kean
I’ve never done a giveaway before, but I LOVE Sam Kean’s “The Disappearing Spoon: And Other True Tales of Madness, Love, and the History of the World from the Periodic...