The energy of an electron in the ground state $$\mathrm{(n=1)}$$ for $$\mathrm{He}^{+}$$ ion is $$\mathrm{-x} \mathrm{~J}$$, then that for an electron in $$\mathrm{(n=2)}$$ state for $$\mathrm{Be}^{3+}$$ ion in $$\mathrm{J}$$ is
In which of the following processes entropy increases?
A. A liquid evaporates to vapour.
B. Temperature of a crystalline solid lowered from $$130 \mathrm{~K}$$ to $$0 \mathrm{~K}$$.
C. $$2 \mathrm{NaHCO}_{3(\mathrm{~s})} \rightarrow \mathrm{Na}_2 \mathrm{CO}_{3(\mathrm{~s})}+\mathrm{CO}_{2(\mathrm{~g})}+\mathrm{H}_2 \mathrm{O}_{(\mathrm{g})}$$
D. $$\mathrm{Cl}_{2(g)} \rightarrow 2 \mathrm{Cl}_{(g)}$$
Choose the correct answer from the options given below:
Which reaction is NOT a redox reaction?
Match List I with List II.
List I (Quantum Number) |
List II (Information provided) |
||
---|---|---|---|
A. | $$\mathrm{m_l}$$ | I. | Shape of orbital |
B. | $$\mathrm{m_s}$$ | II. | Size of orbital |
C. | I | III. | Orientation of orbital |
D. | n | IV. | Orientation of spin of electron |
Choose the correct answer from the options given below :