Advertisements
Advertisements
Question
What do you mean by Atomic number
Advertisements
Solution
Atomic number is the number of protons present in the nucleus. As number of protons is equal to the number of electrons so atomic number also gives the number of electrons in an atom.
APPEARS IN
RELATED QUESTIONS
When does the nucleus of an atom tend to become radioactive?
Answer the following questions based on a hot cathode ray tube.
State the approximate voltage used to heat the filament
Why is a cathode ray tube evacuated to a low pressure?
What is nucleus of an atom? Compare its size with that of the atom. Name its constitutents. How is the number of these constituents determined by the atomic number its atomic model.
What happens to the position of an element in the periodic table when it emits an alpha particle
State three safety precautions that you would take while handling the radioactive substances.
State any two uses of cathode rays.
Are all the radiations viz. α, β and γ emitted in a single radioactive decay?
Two radioactive nuclei are represented by xAp and yAq and when p and q are mass numbers and x, y are the atomic number. How can the products be represented, i .e., what are the new values of p, q. x and y after the emission of an α-particle and a β-particle from A and B respectively.
