Advertisements
Advertisements
प्रश्न
The diagram represents an isotope of hydrogen [H]. Answer the following:
Atomic no. = 1
Mass no. = 1
If an isotope of ‘H’ has mass no. = 2, how many electrons does it have.
Advertisements
उत्तर
One electron.
APPEARS IN
संबंधित प्रश्न
Fill in the blank
An ion which has a positive charge is called a ..................
What is variable valency? Name two elements having variable valency and state their valencies.
The properties of the elements are a periodic function of their __________.
Elements X, Y and Z have atomic numbers 6, 9 and 12 respectively. Which one:
- Forms an anion
- Forms a cation
- Has four electrons in its valence shell?
Draw the atomic diagram of the following element showing the distribution of – protons, neutrons and the electrons in the various shell of the atom.
Oxygen – \[\ce{^16_8O}\]
[The upper number represent the – mass number and the lower number represent the – atomic number e.g. calcium – mass number = 40, atomic number = 20]
The diagram represents an isotope of hydrogen [H]. Answer the following:
Atomic no. = 1
Mass no. = 1
Do isotopes have the same atomic number or the same mass number?
The diagram represents an isotope of hydrogen [H]. Answer the following:
Atomic no. = 1
Mass no. = 1
If an isotope of ‘H’ has mass no. = 3, how many neutrons does it have.
The No. of electrons in the outermost shell of the atom of an inert gas ______.
Mass No =______ + No. of Neutrons.
If element M has mass number 24 and atomic number 12, how many neutrons does its atom contain?
