Advertisements
Advertisements
प्रश्न
The diagram represents an isotope of hydrogen [H]. Answer the following:

Atomic no. = 1
Mass no. = 1
Are isotopes atoms of the same element or different elements.
Advertisements
उत्तर
Isotopes atoms are of the same element.
APPEARS IN
संबंधित प्रश्न
An element has an atomic number 12. How many electrons will be present in the K, L and M energy shells of its atom?
The mass number of an element is 23 and it contains 11 electrons. What is the number of protons and neutrons in it? What is the atomic number of the element?
The atom of an element is made up of 4 protons, 5 neutrons and 4 electrons. What are its atomic number and mass number?
Give reason
Actual atomic mass is greater than mass number.
An element A atomic number 7 mass numbers 14
B electronic configuration 2,8,8
C electrons 13, neutrons 14
D Protons 18 neutrons 22
E Electronic configuration 2,8,8,1
State Valency of each element
An element A atomic number 7 mass numbers 14
B electronic configuration 2,8,8
C electrons 13, neutrons 14
D Protons 18 neutrons 22
E Electronic configuration 2,8,8,1
State (i) Valency of each element (ii) which one is a metal (iii) which is non-metal (iv) which is an inert gas
Match the atomic numbers 4,8,10,15 and 19 with the following:
Element which can form trivalent ion
Match the atomic numbers 4,8,10,15 and 19 with each of the following:
An element which does not form ion
If an atom ‘A’ has atomic number 19 and mass number 39, state –
- Its electronic configuration.
- The number of valence electrons it possesses.
K and L shells can accommodate a maximum of 2 and 8 electrons respectively.
What is the relation between mass number & atomic number?
