MCQ
Electronic configuration 1s22s22px12py12pz1 corresponds to:
- AN
- BCr
- CO
- DF
Explanation:
Total number of electrons = 7.
Therefore, atomic number of the element is 7, which is the atomic number of N.
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$(a)$ The $pH$ of a mixture containing $400\, mL$ of $0.1\, M\, H_2SO_4$ and $400\, mL$ of $0.1\, M\, NaOH$ will be approximately $1.3$.
$(b)$ Ionic product of water is temperature dependent.
$(c)$ A monobasic acid with $K_a = 10^{-5}$ has a $pH = 5$. the degree of dissociation of this acid is $50\%$.
$(d)$ The Le Chatelier’s principle is not applicable to common-ion effect.
The correct statements are:
