The maximum number of electrons that can be accommodated in the N shell is:
A. 8
B. 32
C. 18
D. 50
Answer: Option B
Solution (By JKExamLibrary)
The maximum number of electrons in a shell is given by the formula 2n², where n is the principal quantum number. For the N shell, n = 4. Thus, maximum electrons = 2(4)² = 2(16) = 32. The K, L, M, and N shells hold 2, 8, 18, and 32 electrons respectively.
Explanation:
Real gases deviate from ideal behavior due to intermolecular forces and molecular volume. Ammonia (NH3) has strong intermolecular hydrogen bonding and a relatively large molecular size compared to small, non-polar gases like He, H2, and N2. Therefore, ammonia exhibits the greatest deviation from ideal gas behavior.
Explanation:
Henry Moseley (1913) established the concept of atomic number as the number of protons through X-ray spectra of elements. He showed that atomic number, not atomic mass, is the fundamental property for arranging elements in the periodic table, resolving anomalies in Mendeleev's table. He did not discover a particle but a principle. Modern periodic law is based on atomic number.
Explanation:
This is a single displacement reaction. Iron (Fe) is more reactive than Copper (Cu), so it displaces copper from its aqueous sulfate solution. The blue color of CuSO₄ fades, and a brown deposit of Cu forms. Reactivity series dictates that a more reactive metal displaces a less reactive one.
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