Home › CBSE Class 11 › Chemistry › Atomic combinations › Per NCERT eqn 2.15, the radius of the n-th Bohr …
Per NCERT eqn 2.15, the radius of the n-th Bohr orbit for a hydrogen-like ion (one electron, atomic number Z) scales as which expression?
Ar_n is independent of Z
Br_n = 52.9 × (n² / Z) pm
Cr_n = 52.9 × Z² × n pm
Dr_n = 52.9 × n × Z pm
Answer & Solution
Correct answer: B. r_n = 52.9 × (n² / Z) pm
Per NCERT eqn 2.15, r_n = 52.9 n²/Z pm. As Z increases, orbits contract; as n increases, orbits expand.
Related questions
The strength of a bond depends chiefly on the extent of:Sidewise overlapping produces charged clouds shaped like a:In a pi bond, the axes of the overlapping orbitals remain:Head-on overlap along the internuclear axis is also called:A sigma bond is formed by overlap that is:In a molecule such as HF, the covalent bond is:A bond where the electron pair sits exactly between identical nuclei is:The nitrogen bond enthalpy of 946 kJ per mol is one of the: