EASY
11th ICSE
IMPORTANT
Earn 100
Elements of group and to are main groups. These are also called elements.
77.08% studentsanswered this correctly
Important Questions on Classification of Elements and Periodicity in Properties
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?
EASY
11th ICSE
IMPORTANT
-inner-transition series and -inner-transition series of elements are termed as, respectively.
