Valency of elements and then _ as we move across the period while it remains the same down the group.

Academic Chemistry NCERT Class 10

Valency of elements increases and then decreases as we move across the period while it remains the same down the group.

Tutorialspoint

e

Updated on: 10-Oct-2022

39 Views

How does the valency of elements vary in going down a group of the periodic table?
(a) Electropositive nature of the element(s) increases down the group and decreases across the period(b) Electronegativity of the element decreases down the group and increases across the period(c) Atomic size increases down the group and decreases across a period (left to right)(d) Metallic character increases down the group and decreases across a period.Based on the above trends of the Periodic Table, answer the following about the elements with atomic numbers 3 to 9.(a) Name the most electropositive element among them(b) Name the most electronegative element(c) Name the element with the smallest atomic size(d) Name the element which is a metalloid(e) Name the element which shows maximum valency.
(a) What is the usual number of valence electrons and valency of group 18 elements of the periodic table?(b) What happens to the number of valence electrons in the atoms of elements as we go down in a group of the periodic table?
(a) How does the electropositive character of elements change on going down in a group of the periodic table?(b) State how the valency of elements varies (i) in a group, and (ii) in a period, of the periodic table.
What happens to the metallic character of the elements as we go down in a group of the periodic table?
What is periodicity in properties of elements with reference to the Modern Periodic Table? Why do all the elements of the same group have similar properties? How does the tendency of elements to gain electrons change as we move from left to right in a period? State the reason of this change?
On the basis of the electronic configuration of 95X, the group number and period of the element ‘X’ is :(a) Group 15 period 2 (b) Group 13 period 2(c) Group 9 period 5 (d) Group 13 period 5
Rewrite the following statements after correction, if necessary:(i) Elements in the same period have equal valency (ii) The metallic character of elements in a period increases gradually on moving from left to right.
(a) 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?(b) How does the tendency to gain electrons change as we go down in group 17 of the periodic table? Why does it change this way?
How would the tendency to lose electrons change as we go from left to right across a period of the periodic table?
The atomic numbers of the three elements X, Y and Z are 2, 6 and 10 respectively.(i) Which two elements belong to the same group? (ii) Which two elements belong to the same period? Give reasons for your choice.
What property do all the elements in the same group of the periodic table as fluorine have in common?
What is the another element which has the same valency as given element ?
Consider the following elements:Na, Ca, Al, K, Mg, Li (a) Which of these elements belong to the same period of the periodic table? (b) Which of these elements belong to the same group of the periodic table?
How does the valency of elements change on moving from left to right in the third period of the periodic table?

Kickstart Your Career

Get certified by completing the course

Get Started

Advertisements