Advertisements
Advertisements
प्रश्न
Match the atomic number with the following:
An element of group 2.
विकल्प
19
15
8
4
2
Advertisements
उत्तर
4
संबंधित प्रश्न
The three elements having chemical symbols of Si, B and Ge are:
(a) all metals
(b) all non-metals
(c) all metalloids
(d) Si is metalloid, B is metal and Ge is non-metal
Fill in the blank:
The horizontal rows in the periodic table are called _____________.
How many periods and groups are there in the modern periodic table?
What is the number of elements in the 3rd period, of the modern periodic table?
Give the symbol and valency of the following element and radical.
Chlorine [Chloride]
State the number of elements in Period 3 of the Periodic Table.
Explain structure of modern periodic table in short.
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?
Choose an element from period 3 of modern periodic table that matches the description given below in instance. Give a reason for your choice.
It has a similar structure to diamond.
1H2 is an isotope of hydrogen. In the modern Periodic Table it will ______.
