Concept of Chemical Periodicity (Inorganic Chemistry)
The correct order of second ionization potential of carbon, nitrogen, oxygen and fluorine is
O > F > N > C
F > O > N > C
O > N > F > C
C > N > O > F
Which of the following elements are analogous to the lanthanides?
Which of the order for ionisation energy is correct?
B < Be < N < C < O
B < Be < C < N < O
B < Be < C < O < N
Be > B > C > N > O
Which of the following pairs has elements containing same number of electrons in the outermost orbit?
Ca – Cl
Cl – Br
Na – Cl
N – O
Modern periodic table is based on the atomic number of the elements. The experiment which proved the significance of the atomic number was
Bragg's work on X-ray diffraction
Discovery of X-rays by Rontgen
Millikan's oil drop experiment
Moseley's work on X-ray spectra
Some of the polar crystal when heated produce electric current. This phenomena is termed as
In a period, elements are arranged in strict sequence of
Constant charges in the nucleus
Increasing charges in the nucleus
Decreasing charges in the nucleus
Equal charges in the nucleus
Coinage metals are present in
Which one of the elements is most metallic?
For a p - block element, its 3d, 3s, 3p and 4s orbitals are completely filled and the differentiating electron goes to the 4p orbital. The element should have its atomic number in the range
49 – 54
13 – 18
31 – 36
21 – 26
There are 10 questions to complete.