Structure of Hydrogen Atoms

Q. Assertion: The mass number of hydrogen is equal to its atomic number.
Reason: Hydrogen atom is devoid of neutron.

1. Assertion is incorrect but the reason is correct
2. Assertion is correct but the reason is incorrect
3. Both assertion and reason are correct but reason is not the correct explanation for the assertion
4. Both assertion and reason are correct and the reason is the correct explanation for the assertion

Q. Which of the following is/are true regarding hydrogen atom?

1. It has only one electron
2. It has only one neutron and no proton
3. It is highly inflammable
4. It has only one electron in its L-shell

Q.

Atoms and non polar molecules are electrically _________

Q.

The element ₁₇Cl combines with ₁H to form hydrogen chloride, a covalent compound. Illustrate this by electron dot diagrams.

Q. Bohr’s theory is applicable for
बोर सिद्धांत किसके लिए लागू होता है?

1. Li⁺ ion
   Li⁺ आयन
2. Be³⁺ ion
   Be³⁺ आयन
3. He atom
   He परमाणु
4. H⁺ ion
   H⁺ आयन

Q. Assertion :The mass number of an atom is the sum of number of protons and neutrons it contains. Reason: The mass number of an atom can never be smaller than the atomic number.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
3. Assertion is correct but Reason is incorrect.
4. Both Assertion and Reason are incorrect.

Q. How to calculate no. Of atom in one mole of nitrogen?

Q. Which gas was initially known as the inflammable air?

1. Nitrogen
2. Hydrogen
3. Oxygen
4. Carbon dioxide