How many electrons does a hydrogen molecule have in its K shell?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 1.
A hydrogen molecule (H₂) consists of two hydrogen atoms, each with one electron. In each hydrogen atom, the electron occupies the K shell, which is the first and only electron shell. Since each hydrogen atom has one electron in its K shell, the total number of electrons in the K shell of a hydrogen molecule is 2. These electrons are shared between the two hydrogen atoms, forming a covalent bond in the H₂ molecule.