Advertisements
Advertisements
Question
How does the property vary in periods and in groups?
Advertisements
Solution
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
RELATED QUESTIONS
In the Modern Periodic Table, calcium (atomic number 20) is surrounded by elements with atomic numbers 12, 19, 21, and 38. Which of these have physical and chemical properties resembling calcium?
How would the tendency to lose electrons change as we go from left to right across a period of the periodic table?
How does the chemical reactivity of the halogens vary on going in group 17 of the periodic table?
Explain why All the elements of a period have different chemical properties.
Explain why, the first period of the periodic table has only two elements whereas second period has eight elements
Correct the statement.
Transition elements are placed at extreme right of the periodic table.
Name and state the following with reference to the elements of the first three periods of the periodic table.
A covalent compound formed by an element in period 2 and a halogen.
Which of the following statements about the Modern periodic table is correct?
______ and ______ are called inner transition elements.
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).
