Hydrogen Atom

Q. Tritium contains one proton, one neutron and one electron.

1. False
2. True

Q.

Deuterium and tritium have the same number of protons and a different number of neutrons in each atom.

1. True

2. False

Q. Protium has only 1 neutron.

1. True
2. False

Q. An atom of deuterium, one of the elemental isotopes of hydrogen contains:

1. 1 electron, 1 proton and 2 neutrons
2. 1 electron, 1 proton and 1 neutron
3. 1 electron, 2 protons and 1 neutron
4. 1 electron, 2 protons and 2 neutrons

Q.

Constituents of nuclei of three atoms A, B and C are given below:
A - 90 protons and 148 neutrons
B - 92 protons and 146 neutrons
C - 90 protons and 146 neutrons
Based on the above data, which of these atoms are isotopes?

1. A and C are isotopes; B and C are isobars
2. A and B are isotopes; A and C are isobars
3. B and C are isobars; A and B are isotopes
4. A and C are isotopes; A and B are isobars

Q. Choose the correct option regarding the following statements:

Statement 1: Heavy water is 50% heavier than normal water.
Statement 2: Atomic mass of hydrogen is 1.008 amu.

1. Statement 1 is correct but statement 2 is incorrect.
2. Statement 1 is incorrect but statement 2 is correct.
3. Both statement 1 and statement 2 are incorrect.
4. Both statement 1 and statement 2 are correct.

Q.

Deuterium is an isotope of hydrogen and is represented by ${}_1^2\text{H}$. How many deuterium atoms are present in heavy water?

1. 1

2. 2

3. 3

4. 4

Q.

Isotopes of the same element have

1. different atomic numbers

2. same mass number

3. same atomic mass

4. different mass numbers