Answer:
The light bends
Explanation:
When it passes through two different densities it changes directions, causing a bend
1. it increases then decreases i.e +1, +2, +3, +4, +5, -2, -1 then 0.
2. group 6 elements have more valence electrons than group 2.
3.fluorine is the most reactive because reactivity and electronegativity reduces down the group.
<span />
<span>6.
Because the general formula for alkenes is CnH2n</span>
Answer:
D
Explanation:
According to IUPAC nomenclature, a negative polyatomic ion has its name ending in 'ate' or 'ite'
As in carbonate (CO3^2-)
Arsenite (AsO3-)
Koalas are not crusty, but their fur is very coarse, like wool.
Hope this helps.
