Advertisements
Advertisements
प्रश्न
Select the correct answer
Identify the metalloid
पर्याय
N
P
Bi
Sb
उत्तर
Sb
APPEARS IN
संबंधित प्रश्न
From the following elements :
4Be; 9F; 19K; 20Ca
(i) Select the element having one electron is the outermost shell.
(ii) two elements of the same group.
Write the formula of and mention the nature of the compound formed by the union of 19K and element X(2, 8, 7).
List any two properties of the elements belonging to the first group of the modern periodic table.
How does the valency of elements vary in going down a group of the periodic table?
Fill in the blank in the following statement:
On moving form right to left in the second period, the number of valency electrons ...............
Fill in the blank in the following statement:
The tendency to gain an electron ............... on moving down in a group of the periodic table.
The element which has the maximum number of valence electrons is:
(a) Na
(b) P
(c) Si
(d) A
Why sodium element of group 1 and chlorine element of group 17 both have valency 1?
What do you understand by periodicity?
Chorine in the periodic table is surrounded by the elements with atomic number 9, 16, 18 and 35.
Which of these have physical and chemical properties resembling chlorine.
The following questions refer to the Periodic Table.
Name the first and last element in period 2.
