Group 13 Flashcards
1
Q
What is the nonmetallic element
A
B
2
Q
What are the oxidation states
A
+3 but +1 increases down group (inert pair)
3
Q
What hydrides form
A
MEH3 (Li and Na with B AL GA)
Bh3
4
Q
What is the stability of EH4-
A
Stability decreases down group as bond strength decreases due to weaker orbital overlap
5
Q
What properties does BH3 have
A
Good Lewis acid
6
Q
How is LiAlH4 made
A
4 LiH AlCl3 (ETO2
7
Q
How is NAALH4 made
A
Na Al 2H2 THF 140• 350 atm
8
Q
How is B2H6 made
A
4 BF3 3NaBH4
9
Q
How does B2H6 bond
A
1) electrons donated into vacant p orbital
2) bonding anti and non BHB bridge
10
Q
Why is BBr3 more LA than BF3
A
Original overall is weaker - not to do with electronegativity
