Advertisements
Advertisements
Question
How does the number of valence electrons vary on moving from left or right in the second period of the periodic table?
Solution
In the second period of the periodic table, the number of valence electrons increases from 1 to 8 on moving from left to right.
APPEARS IN
RELATED QUESTIONS
Fill in the blank:
The formulae of chloride of metal M is MCl2. The metal M belongs to ……………. group.
The metal of Group 2 from top to bottom arc Be, Mg, Ca, Sr, and Ba.
1) Which one of these elements will form ions most readily and why?
2) State the common feature in the electronic configuration of all these elements.
How does the tendency to lose electrons change as we go down in group 1 of the periodic table? Why does it change this way?
Where would you locate the element with electronic configuration 2, 8 in the modern periodic table?
How does the number of:
valence electrons and
What is the common feature of the electronic configuration of the elements at the end of period 2, and period 3?
Arrange the following as per instruction given in the bracket.
Mg, Cl, Na, S, Si (decreasing order of atomic size)
Name the elements in the correct order of their increasing atomic numbers present in the first, second, and third short periods of the periodic table.
State which of the elements are –
- metallic
- non-metallic
- noble gases
in each of the periods 2 and 3.
Name or state following with reference to the element of the first three periods of the periodic table.
The valency of the element in period 3 having atomic number 17.
Fill in the blanks from the words A to F given below’.
A: Decreases
B: Increases
C: Remains same
D: Increases by one
E: Electropositive
F: Electronegative
Across a period from left to right in the Modern Periodic Table.
No. of electron shells _________; No. of valence electrons __________: Electronegativity increases Character of elements changes from electropositive to ________.
