Advertisements
Advertisements
प्रश्न
Give the symbol and valency of the following element and radical.
Bicarbonate
Advertisements
उत्तर
| Element/Radical | Symbol | Valency |
| Bicarbonate | \[\ce{HCO3}\] | one |
APPEARS IN
संबंधित प्रश्न
The modern periodic table was prepared by ______.
The following diagram shows a part of the periodic table in which the elements are arranged according to their atomic numbers. (The letters given here not the chemical symbols of the elements):
| a 3 |
b 4 |
c 5 |
d 6 |
e 7 |
f 8 |
g 9 |
h 10 |
|
| i 11 |
j 12 |
k 13 |
l 14 |
m 15 |
n 16 |
o 17 |
p 18 |
(i) Which element has a bigger atom, a or f?
(ii) Which element has a higher valency, k or o?
(iii) Which element is more metallic i or k?
(iv) Which element is more non-metallic, d or g?
(v) Select a latter which represents a metal of valency 2.
(vi) Select a letter which represents a non-metal of valency 2.
Name two elements in Alkali metals.
Name two elements in Alkaline earth metals.
Name the type of elements which have outermost shell complete.
An element barium has atomic number 56. Look up its position in the periodic table and answer the following question.
What will be the formula of its phosphate?
Name and state the following with reference to the elements of the first three periods of the periodic table.
A covalent compound formed by an element in period 2 and a halogen.
Element ‘X’ forms a chloride with the formula XCl2, which is solid with a high melting point. X would most likely be in the same group of the periodic table as: ______
Which of the given elements A, B, C, D and E with atomic number 2, 3, 7, 10 and 30 respectively belong to the same period?
“Hydrogen occupies a unique position in Modern Periodic Table”. Justify the statement.
