Advertisements
Advertisements
प्रश्न
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]
उत्तर
Oxygen – \[\ce{^16_8O}\]
Atomic number Z = p = e = 8
Mass number A = p + n
16 = 8 + n
∴ n = 16 − 8 = 8
O
8 = 2, 6
(K, L)
APPEARS IN
संबंधित प्रश्न
Fill in the Blank of the Following Statement :
An atom has atomic mass number 23 and atomic number 11. The atom has .................... electrons.
(a) What is meant by (i) atomic number, and (ii) mass number, of an element? Explain with the help of an example.
(b) What is the relation between the atomic number and mass number of an element?
(c) If an element M has mass number 24 and atomic number 12, how many neutrons does its atom contain?
Draw the orbital diagram of `""_20^40"Ca"^(2+)` ion and state the number of three fundamental particles present in it.
What is meant by the 'atomic number of an element'?
Match the atomic numbers 4,8,10,15 and 19 with the following:
Element with 6 valence electrons
Elements X, Y and Z have atomic numbers 6,9 and 12 respectively. Which one:
- Forms an anion
- Forms a cation
The diagram represents an isotope of hydrogen [H]. Answer the following:
Atomic no. = 1
Mass no. = 1
Which sub-atomic particles in the 3 isotopes of ‘H’ are the same.
‘A’ is denoted by ______.
Mass No =______ + No. of Neutrons.
State the term for the following:
The amount of substance which contains the same number of units as the number of atoms in carbon-12.