Advertisements
Advertisements
प्रश्न
How does the property vary in periods and in groups?
Advertisements
उत्तर
Along the period, from left to right in the periodic table the electronegativity increases because of the increase in the nuclear charge which in turn attracts the electrons more strongly. On moving down a group, the electronegativity of the elements decreases because of the increased number of energy levels.
APPEARS IN
संबंधित प्रश्न
How would the tendency to gain electrons change on moving from left to right in 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.
Consider the following elements:
20Ca, 8O, 18Ar, 16S, 4Be, 2He
Which of the above elements would you expect to be:
(i) very stable?
(ii) in group 2 of the periodic table?
(iii) in group 16 of the periodic table?
An element X belongs to 3rd period and group 2 of the periodic table. State:
(a) number of valence electrons
(b) valency
(c) metal or non-metal
(d) name of the element
What are horizontal rows and vertical columns in a periodic table known as?
Give the symbol and valency of the following element and radical.
Ammonium
Give the chemical formula of magnesium nitrate
Right or wrong sentence.
The modern periodic table shows the molecular masses of the elements in each frame.
Right or wrong sentence.
To the left of the zig-zag line in the periodic table are the metal elements.
The element which has the least tendency to lose electrons is ______
