Font size
WorksheetsThe periodic table
Total questions: 10
Worksheet time: 8mins
From Lithium to Francium reactivity
Decreases
Increases
Remains same
First decreases then increases
From Fluorine to Astatine reactivity
Increases
Decreases
Remains same
Across a period the oxides turn from
Basic to acidic
Acidic to basic
Remain neutral
The acidic oxides turn neutral
Down the group reactivity increases because
Number of protons increase
Number of electrons increase
Number of shells increase
Basic nature increases of elements
Across a period the number of (a) remains same.
Density of both metals and non metals...........down the group
Decreases
Remains constant
Varies depending on temperature
Increases
Atomic radius increases down the group because
Number of electrons increases
Nucleus increases
Number of shells increases
Radioactivity increases
Reactivity of group 8 elements down the group
Increases
Decreases
Remains same
First increases then decreases
In modern periodic table elements are arranged in order of increasing
Mass number
Atomic number
Metallic character
Neutron number
Group and period of element having atomic umber 15 is
5, 3
3,5
2,5
5,2
