In which of the following pairs of molecules/ions, the central atoms have
In which of the following pairs of molecules/ions, the central atoms have sp²-hybridisation? Options (a) NO₂⁻ and NH₃ (b) BF₃…
7 years ago
Easy
which of the following molecules has trigonal planar geometry?
Which of the following molecules has trigonal planar geometry? Options (a) BF₃ (b) NH₃ (c) PH₃ (d) IF₃ Correct Answer:…
7 years ago
Which one of the following species does not exist under normal conditions?
Which one of the following species does not exist under normal conditions? Options (a) Be₂⁺ (b) Be₂ (c) B₂ (d)…
7 years ago
The set representing the correct order for the first ionisation potential is
The set representing the correct order for the first ionisation potential is Options (a) K > Na > Li (b)…
7 years ago
Which one is electron deficient compound?
Which one is electron deficient compound? Options (a) NH₃ (b) ICl (c) BCl₃ (d) PCl₃ Correct Answer: BCl₃Explanation:BCl₃ has six…
7 years ago
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
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
1 c.c N₂O at NTP contains
1 c.c N₂O at NTP contains Options (a) (1.8/224) x 10²² atoms (b) (6.02/22400) x 10²³ molecules (c) (1.32/224) x…
7 years ago