Classification of Elements and Periodicity Archives - Page 4 of 10

Which of the following has highest hydration energy Options (a) MgCl₂ (b) CaCl₂ (c) BaCl₂ (d) SrCl₂ Correct Answer: MgCl₂Explanation:No…

7 years ago

The maximum valency of an element with atomic number 7 is Options (a) 2 (b) 5 (c) 4 (d) 3…

7 years ago

The metal having the highest melting point is Options (a) chromium (b) diamond (c) tungsten (d) silver Correct Answer: tungstenExplanation:Tungsten…

7 years ago

Variable valency in general, is exhibited by Options (a) transition elements (b) gaseous elements (c) non-metals (d) s-block elements Correct…

7 years ago

Which of the following oxides is amphoteric in character? Options (a) Co₂ (b) CaO (c) SiO₂ (d) SnO₂ Correct Answer:…

7 years ago

In the periodic table, the element with atomic number 16 will be placed in the group Options (a) third (b)…

7 years ago

The electronegativity of the following elements increases in the order Options (a) C, N, Si ,P (b) N, Si, C,…

7 years ago

The screening effect of d-electrons is Options (a) equal to that of p-electrons (b) more than that of p-electrons (c)…

7 years ago

Electric configuration of chalcogens in their outermost orbit is Options (a) s²p³ (b) s²p⁴ (c) s²p⁵ (d) s²p⁶ Correct Answer:…

7 years ago

The correct order of the decreasing ionic radii among the following isoelectronic species are : Options (a) Ca²⁺ > K⁺…

7 years ago