Question Text
Question 4 :
Which of the following explanation is best for not placing hydrogen with alkali metals or halogen?
Question 5 :
Among the other elements present in the earth's crust, hydrogen stands in which position in abundance by mass?
Question 10 :
Assertion (A): Hydrogen shows resemblance with alkali metals as well as halogens.<br/>Reason (R): Hydrogen exists in atomic form only at high temperature.<br/>
Question 15 :
Which of the following given element has one electron, one proton and no neutron?
Question 17 :
The ratio of number of electrons, protons and neutrons in tritium is:
Question 23 :
Hydrogen loses its electron to form $H^+$, in this respect, it resembles:
Question 24 :
Assertion: Diprotium shows relatively inert behaviour at room temperature.
Reason: The values of melting point and boiling point for dideuterium are higher as compared to diprotium.
Question 28 :
In which of the properties listed below, hydrogen does not show similarity with halogens?<br>I. Nature of the oxide<br>II. Electropositive character<br>III. Combination with alkali metals<br>IV. Atomicity
Question 29 :
Radioactive element emits $\alpha, \beta$ and $\gamma$ rays and are characterised by their half-lives. The radioactive isotope of hydrogen is
Question 30 :
Hydrogen accepts an electron to form inert gas configuration. In this it resembles