An atomic nucleus A is composed of 84 protons and 128 neutrons.

The atomic nucleus A emits an alpha particle and is transformed into nucleus B. The atomic nucleus B emits a $β$ - particle and is transformed into a nucleus C. What is the composition of atomic nucleus C?

Question

An atomic nucleus A is composed of 84 protons and 128 neutrons.

The atomic nucleus A emits an alpha particle and is transformed into nucleus B. The atomic nucleus B emits a $β$ - particle and is transformed into a nucleus C. What is the composition of atomic nucleus C?

Toppr Admin · Accepted Answer

Emission on alpha particle will reduce neutron by 2 and proton by 2-So- in final we have proton -84-x2212-2-82- neutron -128-x2212-2-126

An atomic nucleus A is composed of $84$ protons and $128$ neutrons. The nucleus A emits $α$ -particle and is transformed into a nucleus B. What is the composition of B ?
$84$ protons and $126$ neutrons
$86$ protons and $126$ neutrons
$82$ protons and $126$ neutrons
$82$ protons and $128$ neutrons

Emission on alpha particle will reduce neutron by $2$ and proton by $2$ .
So, in final we have proton $= 84 - 2 = 82$ , neutron $= 128 - 2 = 126$

An atomic nucleus A is composed of 84 protons and 128 neutrons. The nucleus A emits α-particle and is transformed into a nucleus B. What is the composition of B ?84 protons and 126 neutrons86 protons and 126 neutrons82 protons and 126 neutrons82 protons and 128 neutrons

Emission on alpha particle will reduce neutron by 2 and proton by 2.So, in final we have proton =84−2=82, neutron =128−2=126

An atomic nucleus A is composed of $84$ protons and $128$ neutrons. The nucleus A emits $α$ -particle and is transformed into a nucleus B. What is the composition of B ?
$84$ protons and $126$ neutrons
$86$ protons and $126$ neutrons
$82$ protons and $126$ neutrons
$82$ protons and $128$ neutrons

Emission on alpha particle will reduce neutron by $2$ and proton by $2$ .
So, in final we have proton $= 84 - 2 = 82$ , neutron $= 128 - 2 = 126$