Elements of the same mass number but of different atomic number are known as ……….
A
Statement I is true , Statement II is true, Statement II is the correct explanation of Statement I
B
Statement I is true, Statement II is true, Statement II is not the correct explanation of Statement I
C
Statement I is true, Statement II is false
D
Statement I is false, Statement II is true
Text Solution
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The correct Answer is:
isotope
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Elements of the same number but of different atomic number are known as ……….
The atoms of different elements having same mass number but different atomic number are known as isobars. The sum of protons and neutrons, in the isobars is always different.
The atoms with same mass number but different atomic number are called
Assertion (A): Two atoms of different elements having same mass number but different atomic numbers are called isobars. Reason (R): Atomic number is the number of protons present and mass number is the total number of protons and neutrons present in a nucleus.
Assertion : Isobars are the element having same mass number but different atomic number. Reason : Neutrons and protons are present inside nucleus
Which of the following pairs is/are correctly matched ? 1. Isotopes : Atoms with same atomic number but different atomic mass 2. Isobars : Atoms with same number of neutrons but different atomic number 3. Isotones : Atoms with same mass number but different atomic number Select the correct answer using the code given below :
IIT-JEE PREVIOUS YEAR (CHEMISTRY)-NUCLEAR CHEMISTRY-CHEMISTRY
