Question

What are exceptional elements in 1 to 118 elements

Answer 1

silicon germanium are some of the elements as they have both metallic and non metallic charecters (mettaloids) so i think they are exceptional

Answer 2

Answer:

the noble gas are exceptional in 1 to 118 elements

so , these are

Argon

Chemical element

OVERVIEW

Argon is a chemical element with the symbol Ar and atomic number 18. It is in group 18 of the periodic table and is a noble gas. Argon is the third-most abundant gas in the Earth's atmosphere, at 0.934%. Wikipedia

Symbol: Ar

Atomic mass: 39.948 u

Atomic number: 1

Boiling point: -185.8 °C

Xenon is a chemical element with the symbol Xe and atomic number 54. It is a colorless, dense, odorless noble gas found in Earth's atmosphere in trace amounts. Wikipedia

Symbol: Xe

Electron configuration: [Kr] 4d¹⁰5s²5p⁶

Atomic number: 54

Atomic mass: 131.293 u

Boiling point: -108.1 °C

Discoverers: Morris Travers, William Ramsay

Helium is a chemical element with the symbol He and atomic number 2. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas group in the periodic table. Its boiling point is the lowest among all the elements. Wikipedia

Symbol: He

Atomic mass: 4.002602 u

Atomic number: 2

Electron configuration: 1s2

Boiling point: -268.9 °C

Discoverers: Pierre Janssen, Per Teodor Cleve, Norman Lockyer

Neon is a chemical element with the symbol Ne and atomic number 10. It is a noble gas. Neon is a colorless, odorless, inert monatomic gas under standard conditions, with about two-thirds the density of air. Wikipedia

Symbol: Ne

Electron configuration: [He] 2s²2p⁶

Atomic mass: 20.1797 u

Atomic number: 10

Electrons per shell: 2,8

Van der Waals radius: 154 pm

Krypton is a chemical element with the symbol Kr and atomic number 36. It is a colorless, odorless, tasteless noble gas that occurs in trace amounts in the atmosphere and is often used with other rare gases in fluorescent lamps. With rare exceptions, krypton is chemically inert. Wikipedia

Symbol: Kr

Electron configuration: [Ar] 3d¹⁰4s²4p⁶

Atomic number: 36

Atomic mass: 83.798 u

Boiling point: -153.4 °C

Discoverers: Morris Travers, William Ramsay

Radon is a chemical element with the symbol Rn and atomic number 86. It is a radioactive, colorless, odorless, tasteless noble gas. Wikipedia

Symbol: Rn

Atomic number: 86

Electron configuration: [Xe] 4f145d106s26p6

Discovered: 1900

Van der Waals radius: 200 pm

Electrons per shell: 2,8,18,32,18,8