Advertisements
Advertisements
प्रश्न
What are horizontal rows and vertical columns in a periodic table known as?
Advertisements
उत्तर
The horizontal rows are known as periods and vertical columns in the periodic table are known as groups.
APPEARS IN
संबंधित प्रश्न
The position of three elements A, B and C in the Periodic Table are shown below –
|
Group 16
|
Group 17
|
|
−
|
−
|
|
−
|
A
|
|
−
|
−
|
|
B
|
C
|
(a) State whether A is a metal or non-metal.
(b) State whether C is more reactive or less reactive than A.
(c) Will C be larger or smaller in size than B?
(d) Which type of ion, cation or anion, will be formed by element A?
How were the positions of cobalt and nickel resolved in the modern periodic table?
What is the number of elements is 1st period the modern periodic table?
An element X belongs to 3rd period and group 2 of the periodic table. State:
(a) number of valence electrons
(b) valency
(c) metal or non-metal
(d) name of the element
What is meant in the periodic table by a period?
Give the symbol and valency of the following element and radical.
Oxygen [Oxide]
Give the symbol and valency of the following element and radical.
Ammonium
Find the correlation:
Mendeleev’s periodic table : atomic mass : : Modern periodic table : _______
An X element with atomic number 11 and Y element with atomic number 13 belongs to the third period in the modern periodic table. With this information, give the answers of the below questions.
- Which element has more metallic character from these two elements?
- What is the valency of each X and Y elements?
- Atom size of Y element is smaller than atom size of X element? Explain?
The element with atomic number 14 is hard and forms acidic oxide and a covalent halide. To which of the following categories does the element belong?
