EASY
11th ICSE
IMPORTANT
Earn 100
Explain what is meant by the ionisation energy of an element. How does this vary between hydrogen and neon in the periodic table? Discuss how the variation can be related to the electronic structure of the atoms.
Important Questions on Classification of Elements and Periodicity in Properties
EASY
11th ICSE
IMPORTANT
Elements of group and to are main groups. These are also called _____ elements.
EASY
11th ICSE
IMPORTANT
The period number represents the highest _____ quantum number of the element.
EASY
11th ICSE
IMPORTANT
Most of the -elements are radioactive, the element up to uranium are natural and rest of the elements are synthetic. Therefore, these are also called _____ elements.
EASY
11th ICSE
IMPORTANT
Second electron gain enthalpy is always _____.
EASY
11th ICSE
IMPORTANT
On Mulliken scale, the average of ionization potential and electron affinity is known as _____.
EASY
11th ICSE
IMPORTANT
For elements of second period, the maximum possible covalency is _____.(four/six)
EASY
11th ICSE
IMPORTANT
For -block elements, the basic nature of oxides, _____ as we move down the group.(increases/decreases)
EASY
11th ICSE
IMPORTANT
Which of the following statements regarding modern periodic law is incorrect?
