In the older periodic table, each group was divided into A & B sub-groups. The only problem with that was that there were two different conventions about which elements were labelled "A" and which were labelled "B". Groups 1 & 2 were clearly 'A' (elements like sodium and calcium) and 11 & 12 were clearly 'B' (elements like copper and zinc). But groups 3 through 10 were labelled 'A' in one convention and 'B' in another, and the opposite labels were used for groups 13 through 18.With the second labelling convention, groups labelled 'A' were known as 'main group elements', and groups labelled 'B' were 'transition metals', and that is still the case.Thus in the newer IUPAC scheme, groups 1, 2, and 13 through 18 are called 'main group elements'.
None. Europe is a continent. You can't have a continent in a continent.
North America
It's not associated with a continent, but with the region of Oceania.
Yes, but only some times some times they could be harmful
the continent for u.k Europe and u.k is not a continent b
The column. The columns are labelled alphabetically, e.g. "A" is column 1, "B" is column 2, "C" is column 3 and so on. The 27th column is labelled "AA", the 28th "AB" etc.
In the older periodic table, each group was divided into A & B sub-groups. The only problem with that was that there were two different conventions about which elements were labelled "A" and which were labelled "B". Groups 1 & 2 were clearly 'A' (elements like sodium and calcium) and 11 & 12 were clearly 'B' (elements like copper and zinc). But groups 3 through 10 were labelled 'A' in one convention and 'B' in another, and the opposite labels were used for groups 13 through 18.With the second labelling convention, groups labelled 'A' were known as 'main group elements', and groups labelled 'B' were 'transition metals', and that is still the case.Thus in the newer IUPAC scheme, groups 1, 2, and 13 through 18 are called 'main group elements'.
Imagine a random triangle ABC. It will make it easier if you draw it with angle C at the top. The opposite side of angle A is labelled a, the opposite side of angle B is labelled b and the opposite side of angle C is labelled c. Draw the altitude (height) from angle C so that it is perpendicular (at 90 degrees) to side c. Looking at this triangle, find expressions for the sines of angles A and B: sinA = h/b sinB = h/a Rearrange these two equations in terms of h: h = bsinA h = asinB As h = h, these equations can be set equal to each other and simplified to find the sine rule: bsinA = asinB sinA/a = sinB/b If you expand on this way of working, you can also find that sinA/a = sinB/b = sinC/c. You have now proven the sine rule for all triangles!
Six. If the sides are labelled a, b, c and d then the congruent pairs are: ab, ac, ad, bc, bd and cd
A diagram of which all the parts of picture have been labelled by their name is known as labelled diagram for e.g. in the diagram of human body the parts like head neck limbs are labelled
found a labelled prescription
It is B: Northern Africa. Africa is a whole different continent from Europe.
Both "labeled" and "labelled" are correct spellings in English, but "labeled" is more commonly used in American English, while "labelled" is more common in British English. Choose the spelling that aligns with the style guide or dialect you are following.
Mouhamed assaad
done
If you have a scientific calculator, it should have a key labelled either xy, or yx. Use this for powers.If you have a scientific calculator, it should have a key labelled either xy, or yx. Use this for powers.If you have a scientific calculator, it should have a key labelled either xy, or yx. Use this for powers.If you have a scientific calculator, it should have a key labelled either xy, or yx. Use this for powers.