Advertisements
Advertisements
Question
How does the property vary in periods and in groups?
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
Name the scientist who first of all showed that atomic number of an element is a more fundamental property than its atomic mass.
Would you place the two isotopes of chlorine, CI-35 and CI-37 in different slots because of their different atomic masses or in the same slot because their chemical properties are the same? Justify your answer.
Explain why All the elements of a group have similar chemical properties.
The electronic configuration of an element T is 2, 8, 8, 1.
What is the period number of T?
State the modern periodic law.
What is meant in the periodic table by a period?
Give the symbol and valency of the following element and radical.
Nitrate
Give the symbol and valency of the following element and radical.
Carbonate
The modern periodic table shows the molecular masses of the elements in each frame.
Explain giving reason why although the nuclear charge in atoms increases in moving from left to right in a period as well as in moving from top to bottom in a group in the Modern periodic table, but the size of the atoms does not vary similarly in both situations.
