Advertisements
Advertisements
प्रश्न
iii) Observe the figure and answer the following questions.
a) Identify the block shown by box A and write an electronic configuration of any one element of this block.
b) Identify the block of element denoted by letter B and write its period number.
Advertisements
उत्तर
a) The block shown by box A is s-Block.
S(16) = 2, 8, 6 (electronic configuration of any element in s block)
b) The block of element denoted by letter B is d – Block.
The period number of that element is 4.
APPEARS IN
संबंधित प्रश्न
Arrange the following as per the instructions given in the brackets:
Na, K, Cl, S, Si (increasing order ionization energy)
Metallic character and non-metallic character are periodic properties discuss ?
Give the trend in metallic character:
(i) across the period left to right
Arrange the elements of group 17 and group 1 according to the given conditions.
Increasing non – metallic character
A metal M forms as oxide having the formula M2O3. It belongs to third period. Write the atomic number and valency of the metal.
Write a scientific reason.
Metallic character goes on decreasing while going from left to right in a period.
Among the elements of the second period, Li to Ne, pick out the element that is the most reactive metal
Select the correct answer
Which of the following electronic structure is of a metal?
If an element is in group 7 is it likely to be metallic or non metallic in character?
Supply the missing word from the words given in brackets.
If an element has one electron in its outermost energy level, then it is likely to be _ (metallic, non metallic)
Within a group, where would you expect to find the element with the greatest metallic character.
Silicon is a metallic element.
The metal which is hard and has a high melting point and used in filaments of electrical bulbs is ______
An element has atomic number 17. To which group, the period does it belong? It is metal or non-metal?
Three elements B, Si and Ge are
Which of the following metal (s) do not react with water?
Choose the odd one out and write the reason:
Arrange:
Be, Li, C, B, N, O, F (in increasing metallic character).
