What are the most metallic and nonmetallic elements of period 2?
Answer: The most metallic and non-metallic elements of period 2 of the periodic table are Lithium( Li) and Fluorine (Fl) respectively. Explanation: As we move across a period from the left to the right, the metallic character decreases and the non-metallic character increases. Click to see full answer.
Which metal is the most metallic in character in Group 2?
Don't wait until its too late! Metallic character represents the reactivity of metals. Radium is the most heaviest metal and the most metallic in character in group 2 because along the period metallic character increases from right to left and down the group it increases from top to bottom.
What elements are left of the metalloids in period 2?
All elements left of the metalloids are metals and all elements right of the metalloids are nonmetals. The exception is hydrogen, which is a nonmetal. In period 2, the elements left of the metalloid, boron, are lithium and beryllium.
What elements are in the second period of the periodic table?
The second period contains the elements lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, and neon. In a quantum mechanical description of atomic structure, this period corresponds to the filling of the second ( n = 2) shell, more specifically its 2s and 2p subshells.
Which element will be most metallic?
The most metallic element is francium. However, francium is a man-made element, except for one isotope, and all isotopes are so radioactive they almost instantly decay into another element. The natural element with the highest metallic character is cesium, which is found directly above francium on the periodic table.
Why Lithium is the most metallic element in period 2?
As Lithium is the first element as we move across the period 2, it has the most metallic character whereas the fluorine is the last element( before the inert gas) and hence it is the most non-metallic one.
Which element is most non metallic in period 2?
The Most Nonmetallic Element, Fluorine.
Which period is most metallic?
As metallic character decreases across a period and rubidium being the first element of the fifth group is the most metallic.
Which is more metallic lithium or beryllium?
• Since the metallic character of an element depends on the ease with which an electron can be removed from its valence shell, lithium is more metallic than beryllium.
Which elements in Period 2 are metals?
Period 2 only has two metals (lithium and beryllium) of eight elements, less than for any subsequent period both by number and by proportion.
Which group has the highest metallic character?
Therefore, caesium being the last naturally occurring element in group 1, is the most metallic element in the periodic table according to the periodic trend.
Which is more metallic sodium or lithium?
question. Answer: Li has maximum metallic character. Explanation: Metallic character means the reactivity of a metal.
Which is the most metallic element in period 3?
Answer. In Period 3, the most metallic element is Sodium because metallic character decreases from left to right across a period.
Which element is most non metallic?
The most non-metallic element in the periodic table is Fluorine.
How many elements are in period 2?
Period 2 only has two metals (lithium and beryllium) of eight elements, less than for any subsequent period both by number and by proportion.
Which element is the least reactive in period 2?
The elements in period 2 often have the most extreme properties in their respective groups; for example, fluorine is the most reactive halogen, neon is the most inert noble gas, and lithium is the least reactive alkali metal.
How many electrons are needed for a period 2?
Period 2 elements (carbon, nitrogen, oxygen, fluorine and neon) obey the octet rule in that they need eight electrons to complete their valence shell (lithium and beryllium obey duet rule, boron is electron deficient .), where at most eight electrons can be accommodated: two in the 2s orbital and six in the 2p subshell.
What is the atomic number of beryllium?
Beryllium (Be) is the chemical element with atomic number 4, occurring in the form of 9 Be. At standard temperature and pressure, beryllium is a strong, steel-grey, light-weight, brittle, bivalent alkali earth metal, with a density of 1.85 g⋅cm −3. It also has one of the highest melting points of all the light metals. Beryllium's most common isotope is 9 Be, which contains 4 protons and 5 neutrons. It makes up almost 100% of all naturally occurring beryllium and is its only stable isotope; however other isotopes have been synthesised. In ionic compounds, beryllium loses its two valence electrons to form the cation, Be 2+ .
What is the chemical element of carbon?
Carbon is the chemical element with atomic number 6, occurring as 12 C, 13 C and 14 C. At standard temperature and pressure, carbon is a solid, occurring in many different allotropes, the most common of which are graphite, diamond, the fullerenes and amorphous carbon. Graphite is a soft, hexagonal crystalline, opaque black semimetal with very good conductive and thermodynamically stable properties. Diamond however is a highly transparent colourless cubic crystal with poor conductive properties, is the hardest known naturally occurring mineral and has the highest refractive index of all gemstones. In contrast to the crystal lattice structure of diamond and graphite, the fullerenes are molecules, named after Richard Buckminster Fuller whose architecture the molecules resemble. There are several different fullerenes, the most widely known being the "buckeyball" C 60. Little is known about the fullerenes and they are a current subject of research. There is also amorphous carbon, which is carbon without any crystalline structure. In mineralogy, the term is used to refer to soot and coal, although these are not truly amorphous as they contain small amounts of graphite or diamond. Carbon's most common isotope at 98.9% is 12 C, with six protons and six neutrons. 13 C is also stable, with six protons and seven neutrons, at 1.1%. Trace amounts of 14 C also occur naturally but this isotope is radioactive and decays with a half life of 5730 years; it is used for radiocarbon dating. Other isotopes of carbon have also been synthesised. Carbon forms covalent bonds with other non-metals with an oxidation state of −4, −2, +2 or +4.
How many atoms are in boron?
Crystalline boron is a very hard, black material with a high melting point and exists in many polymorphs: Two rhombohedral forms, α-boron and β-boron containing 12 and 106.7 atoms in the rhombohedral unit cell respectively, and 50-atom tetragonal boron are the most common. Boron has a density of 2.34 −3.
Which element is in the 2s subshell?
All period 2 elements completely obey the Madelung rule; in period 2, lithium and beryllium fill the 2s subshell, and boron, carbon, nitrogen, oxygen, fluorine, and neon fill the 2p subshell. The period shares this trait with periods 1 and 3, none of which contain transition elements or inner transition elements, which often vary from the rule. ...
What are the elements left of period 2?
The exception is hydrogen, which is a nonmetal. In period 2, the elements left of the metalloid, boron, are lithium and beryllium.
Which element is on the right side of the periodic table?
The metalloids are B, Si, Ge, As, Sb, Te, and Po. All elements left of the metalloids are metals and all elements right of the metalloids are nonmetals. The exception is hydrogen, which is a nonmetal . In period 2, the elements left of the metalloid, boron, are lithium and beryllium.