Atom 23488Q decay by alpha emission to give a...
Atom 23488Q decay by alpha emission to give an atom R. The atomic number and mass number of atom R are respectively
86 and 230
87 and 234
88 and 233
90 and 238
Correct answer is A
23488Q→R+42He
∴
= ^{230} _{86} R
The function of zinc electrode in a galvanic cells is that it ...
Which of the following reagents could be used to distinguish between propan-1-ol and propa...
Helium is often used in observation balloons because it is? ...
The presence of unpaired electrons in an atom of a transition metal gives rise to ...
The refreshing characteristic taste of fizzy drinks is due ot the presence of ...
2H_2 + O_2 → 2H_2O From the equation above, calculate the volume of unre...
Which of the following gases contains the least number of atoms at s.t.p? ...