explain group 18 elements.anybody teach me clearly.
rkwxpvhyko
Share
explain group 18 elements.anybody teach me clearly.
rkwxpvhyko
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Answer:
if satisfied pls mark mebrainliest
Explanation:
The noble gases are a group of chemical elements that make up Group 18 on the periodic table. These gases all have similar properties under standard conditions: they are all odorless, colorless, monatomic gases with very low chemical reactivity. The six noble gases that occur naturally are helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), and Radon (Rn).
Properties of the Noble Gases
The properties of the noble gases can be well explained by modern theories of atomic structure. The outer shell of valence electrons is considered to be “full” in noble gases, giving them little tendency to participate in chemical reactions. It has been possible to prepare only a few hundred noble gas compounds. In the case of Neon (Ne), for example, both the n = 1 and n = 2 shells are complete and therefore it is a stable monatomic gas under ambient conditions.
Electron configuration of neonThe electron configuration of Neon (Ne), with two complete energy levels, 1s2 and 2s2 2p6.
The melting and boiling points (physical properties) of a noble gas are close together, differing by less than 10 °C (18 °F) – that is to say, they are liquids over only a small temperature range.
Physical properties of the noble gasesThe physical properties of the noble gases are tightly grouped.
The noble gases have weak interatomic forces and consequently have very low melting and boiling points. They are all monatomic gases under standard conditions, including those with larger atomic masses than many other elements that are solids under standard conditions.
Electron Configurations in the Noble Gases
The noble gas atoms, as do the atoms in most other groups on the periodic table, increase steadily in atomic radius from one period to the next due to an increasing number of electrons. The size of the atom is related to several properties. For example, the ionization potential decreases with an increasing radius because the valence electrons in the larger noble gases are farther away from the nucleus and so are not held as tightly together by the atom. Noble gases have the largest ionization potential among the elements of each period. This reflects the stability of their electron configuration and points again to their relative lack of chemical reactivity.
Ionization potential for noble gasesThe noble gases have the largest ion
Answer:
Helium(He)
Neon (Ne)
Argon (Ar)
Krypton (Kr)
Xenon (xe)
and Radon (Ra)
Explanation:
They are referred to as noble gases or inert gases. This means these element are chemically inert and do not take part in any chemical action
Hope you understand