What element is in Group 7A period 2?
fluorine
In its elemental form, fluorine (F2) is a pale yellow gas; it is extremely reactive and toxic….Group 7A — The Halogens.
| (6) | |
| (7) | |
| (8) | |
| (9) |
What is Group 7A on the periodic table called?
Most halogens are electron-hungry, like fluorine. Halogens can also be referred to as group 7A, group 17, or group VIIA elements.
Which element is in period 2 and has 7 electron?
N
Periodic trends
| Chemical element | Electron configuration | |
|---|---|---|
| 7 | N | [He] 2s2 2p3 |
| 8 | O | [He] 2s2 2p4 |
| 9 | F | [He] 2s2 2p5 |
| 10 | Ne | [He] 2s2 2p6 |
What is the name of the element that is in group 8a and period 2?
Group 8A (or VIIIA) of the periodic table are the noble gases or inert gases: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn)….Group 8A — The Noble or Inert Gases.
| 2 | |
| 1A | Li |
| 2A | Be |
| 4A | C |
Is group 7A reactive?
Because the halogens are highly reactive, none is found in nature as the free element. Chlorine was the first halogen to be obtained in pure form.
Where is period 2 on the periodic table?
The horizontal rows of the periodic table are called periods. Period 2, or the second period, refers to the second row from the top of the periodic table.
What element is in Group 2 period 2?
Group 2A (or IIA) of the periodic table are the alkaline earth metals: beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra)….Group 2A — The Alkaline Earth Metals.
| 2 | |
| 1A | Li |
| 2A | Be |
| 4A | C |
What element is in group 1 Period 2?
Fact: Neon is a monatomic gas.
What are the elements in group VIII called?
Group 8 are known as noble gases.
What are the 7 periods?
Period 7 element
| Hydrogen | ||
|---|---|---|
| Lithium | Beryllium | Fluorine |
| Sodium | Magnesium | Chlorine |
| Potassium | Calcium | Bromine |
| Rubidium | Strontium | Iodine |
What element is in group 1 and period 7?
Francium is a highly radioactive metal that decays into astatine, radium, and radon. As an alkali metal, it has one valence electron. Francium was discovered by Marguerite Perey in France (from which the element takes its name) in 1939.
What element is in group 8a period 2?
Helium is a colorless, odorless, unreactive gas which liquefies at -268.97°C (4.18 K). The name “helium” is derived from the Greek word for the Sun, helios….Group 8A — The Noble or Inert Gases.
| 2 | |
| 1A | Li |
| 2A | Be |
| 4A | C |
Which element is in period 5 group 7?
The technetium element is in group 7 and period 5 of the periodic table.
What element is in group 2 Period 3?
magnesium
Hence the name of the element is magnesium.
What is a period 7 element?
A period 7 element is one of the chemical elements in the seventh row (or period) of the periodic table of the chemical elements.
How many periods are there in the periodic table?
There are seven periods in the periodic table, with each one beginning at the far left. A new period begins when a new principal energy level begins filling with electrons. Period 1 has only two elements (hydrogen and helium), while periods 2 and 3 have 8 elements.
What is group 7A on the periodic table?
Group 7A (or VIIA) of the periodic table are the halogens: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). The name “halogen” means “salt former”, derived from the Greek words halo- (“salt”) and-gen (“formation”).
What are the 14 groups of elements in the periodic table?
1 Group 1: Alkali metals group (hydrogen not included) 2 Group 2: Alkaline earth metals group 3 Group 3-12: Transition and Inner transition metals group 4 Group 13: Boron group 5 Group 14: Carbon group 6 Group 15: Nitrogen group 7 Group 16: Oxygen group 8 Group 17: Halogen group 9 Group 18: Noble gases group