19 questions · timed · auto-graded
$\ce {^235_92 U + ^1_0n -> (^236_92 U)-> ^144_56 Ba + ^89_36 Kr + 3 ^1_0n + Energy}$
(2) $\ce{\underset{\text{(deuterium)}}{^2_1H} + \underset{\text{(deuterium)}}{^2_1H} -> \underset{\text{(tritium)}}{^3_1He}} + \underset{\text{(proton)}}{^1_1H} + 4.0 \text{MeV}$
Isobars: the atoms of different elements which have the same mass number A, but differ in their atomic number Z are called isobars.
Example : $\ce{^23_11Na}$ & $\ce{^23_12Mg}$
Example: Hydrogen has three isotopes Protium `""_1^1"H" `, Deuterium `""_1^2"H"`, and Tritium `""_1^3"H"`.
$\ce {^30_15 P , ^32_15 P}$
Give reason for your ansewr.
The reason is that the number of neutrons exceeds the number of protons.
$\ce {^12_6 C , ^14_6 C}$
Give reason for your answer.
The reason is that the number of neutrons exceeds the number of protons.
The nucleus of radio phosphorous has one neutron more than the stable nucleus. What will be its atomic number and mass number?
The atom is specified by the symbol $\ce {^A_Z X} $ where X is the chemical symbol for the element.
Atomic number is 15 and mass number is 32.
What is its atomic number and mass number.
The atom is specified by the symbol $\ce{^A_Z X}$ where X is the chemical symbol for the element.
Atomic number is 15 and mass number is 31.
Its symbolis $\ce{^0_-1e}$ or $\ce{^0_-1β }$
