Home › NY Regents Chemistry › Chemistry › Chemical Bonding and Molecular Geometry › Hydrogen does not obey the octet rule. How many …
Hydrogen does not obey the octet rule. How many electrons fill its valence shell?
AFour electrons
BSix electrons
CTwo electrons
DEight electrons
Answer & Solution
Correct answer: C. Two electrons
1. The octet rule describes main group atoms reaching eight valence electrons.
2. Hydrogen has only one shell available, and that shell holds two electrons at most.
3. Two electrons therefore fill hydrogen completely, which is why it sits outside the octet rule.
_Source: OpenStax Chemistry (CC BY 4.0), Chs 7 and 17, section 7.3 Lewis Symbols and Structures_
Related questions
An ionic formula such as Al2O3 does not tell you:For p-block elements forming cations, electrons are removed from which orbitals first?In a chlorine molecule, each chlorine atom ends up surrounded by how many electrons in totA monatomic anion typically forms when a nonmetal atom gains enough electrons to reach:The calcium ion Ca2+ is isoelectronic with which noble gas?When transition metals ionise, the electrons removed first come from the:Breaking the bonds in one mole of hydrogen molecules requires about:Most covalent compounds are poor conductors of electricity because they are: