MCQ
Nucleons are equal to :
- ANumber of electrons in an atom
- BNumber of protons in the nucleus
- CNumber of neutrons in the nucelus
- ✓Number of protons and neutrons in the nucleus
eg: If the given atom or isotope is $He _2^4 He _{ Z }^{ A }$
$Z=2$ Number of protons
$A=4$ Number of nucleons
$A - Z =4-2=2$ Number of neutrons
Hence nucleons $=$ number of $[$ protons $+$ neutrons $]$
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| Acid | $HF$ | $HCL$ | $HBr$ | $HI$ |
| $K_a$ | $7.2 \times 10^{-4}$ | $1 \times 10^6$ | $1 \times 10^9$ | $3 \times 10^{11}$ |
Which of these Bronsted acids would have the weakest conjugate base ?