Advertisements
Advertisements
प्रश्न
From the symbol `""_12^24"Mg"`
, state the mass number, the atomic number and electronic configuration of magnesium.
Advertisements
उत्तर
Mass number = 24
Atomic number = 12
No. of electrons = 24 - 12 = 12
Electronic configuration = 2, 8, 2
APPEARS IN
संबंधित प्रश्न
Name the particles which actually determine the mass of an atom.
(a) Which of the nuclear particles is present in the same fixed number in the atoms of any particular element?
(b) What do we call this number which is characteristic of a particular element?
Draw the orbital diagram of `""_20^40"Ca"^(2+)` ion and state the number of three fundamental particles present in it.
Define the term of atomic number.
Atomic number : ______ :: Mass number : Number of protons and neutrons.
The atomic number of an element is 9, it has 10 neutrons. Find the element from the periodic table. What will be its mass number?
What is common salt? Name the elements present in it. Write the formula of common salt. What are the atomic number and the mass number of the elements? Write the ions in the compound.
What is mass number of an atom?
Explain the following terms.
- Proton
- Electron
- Neutron.
Electrons revolve around the nucleus in definite open shells.
