2.1.2: Compounds, formulae and equations Flashcards
1
Q
Which are the 4 elements that don’t tend to form ions and why?
A
The elements are beryllium, boron, carbon and silicon
Requires a lot of energy to transfer outer shell electrons
2
Q
What are molecular ions?
A
Covalently bonded atoms that lose or gain electrons
3
Q
What is the charge of an ammonium ion?
A
+1 → NH4+
4
Q
What is the charge of a hydroxide ion?
A
-1 → OH-
5
Q
What is the charge of a nitrate ion?
A
-1 → NO3-
6
Q
What is the charge of a sulphate ion?
A
-2 → SO42-
