Correct order of first IP among following elements Be, B, C, N, O is
Correct order of first IP among following elements Be, B, C, N, O is Options (a) B< Be < C
7 years ago
Classification of Elements and Periodicity
A trend common to both for group I and VII elements in the periodic table
A trend common to both for group I and VII elements in the periodic table as atomic number increases is…
7 years ago
Which of the following pairs show reverse properties on moving along
Which of the following pairs show reverse properties on moving along a period from left to right and from top…
7 years ago
One of the characteristic properties of non-metals is that they
One of the characteristic properties of non-metals is that they Options (a) Are reducing agents (b) Form basic oxides (c)…
7 years ago
The smallest among the following ion is
The smallest among the following ion is Options (a) Na⁺ (b) Mg²⁺ (c) Ba²⁺ (d) Al³⁺ Correct Answer: Al³⁺Explanation:The size…
7 years ago
The stability of +1 oxidation state increases in the sequence:
The stability of +1 oxidation state increases in the sequence: Options (a) Tl < In < Ga < Al (b)…
7 years ago
Be resembles much with
Be resembles much with Options (a) Li (b) Al (c) Zn (d) Ra Correct Answer: AlExplanation:Be resembles much with Al,…
7 years ago
When a neutral atom is converted into a cation, there is
When a neutral atom is converted into a cation, there is Options (a) decrease in the atomic number (b) an…
7 years ago
The first ionization potentials (eV) of Be and B respectively are
The first ionization potentials (eV) of Be and B respectively are Options (a) 8.29, 9.32 (b) 9.32, 9.32 (c) 8.29,…
7 years ago
Which pair of atomic numbers represents s-block elements?
Which pair of atomic numbers represents s-block elements? Options (a) 3,12 (b) 6,12 (c) 7,15 (d) 9,17 Correct Answer: 3,12Explanation:Last…
7 years ago