Advertisements
Advertisements
प्रश्न
Which element has the electronic configuration 2, 8, 2?
उत्तर
Magnesium is the element with the electronic configuration of 2,8,2 as its atomic number is 12, since the atomic number is the sum of all the electrons present in the electronic configuration.
Electronic configuration:- Shells: K L M
Electrons arranged: 2 8 2
APPEARS IN
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
Consider the following elements:
Na, Ca, Al, K, Mg, Li
Which of these elements belong to the same group of the periodic table?
How does the chemical reactivity of alkali metals vary on going in group 1 of the periodic table?
What is a period in a periodic table?
Give the symbol and valency of the following element and radical.
Bisulphate
State the number of elements in Period 1 of the Periodic Table.
Group 13 to 18 : p block : : _______ : d block
Write scientific reason.
Lithium and sodium are included in the same group in periodic table.
______ and ______ are called inner transition elements.
An element has the atomic number 12.
- Write the electric configuration.
- To which group and period does it belong.
