1. Alkali metals
2. Alkaline earth metals
3. Scandium family
4. Titanium family
5. Vanadium family
6. Chromium family
7. Iron family
8. Manganese family
9. Cobalt family
10. Nickel family
11. Zinc family
12. Copper family
13. Boron family
14. Carbon family
15. Pnicnides
16. Chalcogenides
17. Halogens
18. Noble gases
Out of the first 18 elements on the periodic table, 10 are solid
Some radioactive elements in the periodic table are radium, uranium, plutonium, thorium, polonium, radon, francium, astatine, radium, and curium.
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'.
period 3 elements in the periodic table have 3 electrons in there outher shell hence the name.
The six elements commonly recognized as metalloids are boron, silicon,germanium, arsenic, antimony and tellurium. So that is six elements out of 112 elements or 5.4%
The middle 10 columns of the periodic table are known as the transition metals. These elements are characterized by their ability to form colored compounds and exhibit variable oxidation states. They are located between groups 3 to 12 on the periodic table.
because thats how the periodic table is
Out of the first 18 elements on the periodic table, 10 are solid
Here are the first 10 elements on the Periodic Table from 1 to 10.HydrogenHeliumLithiumBerylliumBoronCarbonNitrogenOxygenFluorineNeon
10
Platinum is located in Group 10 and Period 6 of the periodic table of elements. It has the atomic number 78 and the symbol Pt.
10
Some radioactive elements in the periodic table are radium, uranium, plutonium, thorium, polonium, radon, francium, astatine, radium, and curium.
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'.
period 3 elements in the periodic table have 3 electrons in there outher shell hence the name.
The six elements commonly recognized as metalloids are boron, silicon,germanium, arsenic, antimony and tellurium. So that is six elements out of 112 elements or 5.4%
Please follow the links for some of the elements in the periodic table (link attached) and read the articles.