Question
What does the negative sign of electron energy convey?
✓
Answer
Negative sign for the energy of an electron in any orbit in a hydrogen atom indicates that the energy of the electron in the atom is lower than the energy of a free electron at rest. A free electron at rest is an electron that is infinitely far away from the nucleus and is assigned the energy value of zero.
As the electron gets close to the nucleus, value of ‘n’ decreases and $E_n$ becomes large in absolute value and more negative. The negative sign corresponds to attractive forces between electron and nucleus.
As the electron gets close to the nucleus, value of ‘n’ decreases and $E_n$ becomes large in absolute value and more negative. The negative sign corresponds to attractive forces between electron and nucleus.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Match the pairs :
| Column A | Column B | ||
| i. | Castner-Kellner cell | a. | Na2CO |
| ii. | Slaked lime | b. | CaCO3 |
| iii. | Solvay process | c. | NaOH |
| iv. | Limestone | d. | Ca(OH)2 |
Based on the above diagram, answer the following questions:
$i.$ Name the chromatographic technique involved.
$ii.$ From the developed chromatogram, state which has the highest and which has the lowest $R_f$ value?
$iii.$ Based on the $\text{TLC,}$ which component would elute out at the end of a column chromatography?
$iv.$ Mention two applications of $\text{TLC}$ method.
Derive an Ideal gas equation. Mention the terms involved in it. Also write how it is utilised to obtain combined gas
Define: Critical temperature, critical volume and critical pressure.
Inductive effect and resonance effect
Show that carbon monoxide and carbon dioxide satisfy the law of multiple proportions.
The atomic radii of Cl, I, and Br are 99, 133, and 114 pm, respectively.
Explain the formation of π and π* molecular orbitals with the help of a diagram
Write a short note on bond order.
