| Group | 9 |
|---|---|
| Period | |
| 4 | 27 Co |
| 5 | 45 Rh |
| 6 | 77 Ir |
| 7 | 109 Mt |
In modern IUPAC nomenclature, Group 9 of the periodic table contains the elements cobalt (Co), rhodium (Rh), iridium (Ir), and meitnerium (Mt). In Chemistry a group, also known as a family, is a vertical column in the Periodic table of the Chemical elements There are 18 groups in In the Periodic table of the elements, a period is a horizontal row of the table A period 4 element is one of the Chemical elements in the fourth row (or period) of the periodic table of the elements. Cobalt (ˈkoʊbɒlt is a hard lustrous silver-grey Metal, a Chemical element with symbol Co. A period 5 element is one of the Chemical elements in the fifth row (or period) of the periodic table of the elements. Rh redirects here For other uses see Rh (disambiguation Rhodium (ˈroʊdiəm is a Chemical element with the symbol A period 6 element is one of the Chemical elements in the sixth row (or period) of the periodic table of the elements, including the Lanthanides Iridium (ɪˈrɪdiəm is a Chemical element that has the symbol Ir and Atomic number 77 A period 7 element is one of the Chemical elements in the seventh row (or period) of the periodic table of the elements. Meitnerium (maɪtˈnɜriəm is a Chemical element in the Periodic table that has the symbol Mt and Atomic number 109 The International Union of Pure and Applied Chemistry ( IUPAC) (aɪjuːpæk or ay-yoo-pec) is an international Non-governmental organization The periodic table of the chemical elements is a tabular method of displaying the Chemical elements Although precursors to this table exist its invention is A chemical element is a type of Atom that is distinguished by its Atomic number; that is by the number of Protons in its nucleus. Cobalt (ˈkoʊbɒlt is a hard lustrous silver-grey Metal, a Chemical element with symbol Co. Rh redirects here For other uses see Rh (disambiguation Rhodium (ˈroʊdiəm is a Chemical element with the symbol Iridium (ɪˈrɪdiəm is a Chemical element that has the symbol Ir and Atomic number 77 Meitnerium (maɪtˈnɜriəm is a Chemical element in the Periodic table that has the symbol Mt and Atomic number 109 These are all d-block transition metals. The d-block of the periodic table of the elements consists of those Periodic table groups that contain elements in which in the atomic ground state the highest-energy In Chemistry, the term transition metal (sometimes also called a transition element) has two possible meanings It commonly refers to any element in All known isotopes of Mt are radioactive with short half-lives, and it is not known to occur in nature; only minute quantities have been synthesized in laboratories. Isotopes (Greek isos = "equal" tópos = "site place" are any of the different types of atoms ( Nuclides
| Explanation of right side periodic table slice: | Transition metals | atomic number in black are solids | solid borders are older than the Earth (Primordial elements) | dashed borders have no isotopes older than the earth |
Applications
- Alloys with other metals, primarially to add corrosion and wear resistance
- Industrial Catalysts
- Superalloys
- Electrical Components
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