Advertisements
Advertisements
प्रश्न
The electronic configuration of an element T is 2, 8, 8, 1.
What is the period number of T?
Advertisements
उत्तर
With 4 shells T belong to period 4.
संबंधित प्रश्न
Give alongside is a part of the periodic table :
As we move horizontally from left to right:
| Li | Be | B | C | N | O | F | |
| Na | Mg | Al | Si | P | S | Cl |
(i) What happens to the metallic character of the elements?
(ii) What happens to the atomic size?
Explain why all the elements of a period have different chemical properties.
What is the usual number of valence electrons and valency of group 18 elements of the periodic table?
Which of the following are the correct characteristics of isotopes of an element?
(i) same atomic mass
(ii) same atomic number
(iii) same physical properties
(iv) same chemical properties
(a) (i), (ii) and (iv)
(b) (ii), (iii) and (iv)
(c) (ii) and (iii)
(d) (ii) and (iv)
Give the group number of following elements present in periodic table
Correct the statement.
Transition elements are placed at extreme right of the periodic table.
Name an alkali metal in period 3 and halogen in period 2.
Give the symbol and valency of the following element and radical.
Bisulphite
Which of the following elements does not lose an electron easily?
Arrange the following elements in the increasing order of their metallic character
| Mg, | Ca, | K, | Ge, | Ga |
