Advertisements
Advertisements
प्रश्न
What is the main characteristic of the last element in each period of the periodic table?
Advertisements
उत्तर
The last element in each period of the periodic table is a gaseous element with its valence shell completely filled. Except for helium, which has a complete duplet configuration, all five gases have a complete octet configuration.
APPEARS IN
संबंधित प्रश्न
Consider the following elements:
Na, Ca, Al, K, Mg, Li
Which of these elements belong to the same group of the periodic table?
How would the tendency to lose electrons change as we go from left to right across a period of the periodic table?
State the term
The tabular arrangement of elements in horizontal rows and vertical columns _________
Two elements P and Q belong to the same period of the modern periodic table and are in group 1 and group 2, respectively. Compare the following characteristics in the tabular form.
- Number of electrons in their atoms
- Their tendency to lose electrons
- Their metallic characters
- Formation of their oxides
- Formulae of their chlorides
Give the symbol and valency of the following element and radical.
Ammonium
What are groups and periods in the modern periodic table?
The arrangement of elements in the Modem Periodic Table is based on their ______
The amount of energy released when one or more electrons is added to the neutral atom is ______
What is the symbol of the element Tungsten?
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 variable valency and is a member of the Oxygen family (group 16).
