Maximum number of electrons in a subshell of an atom is determined
Maximum number of electrons in a subshell of an atom is determined by the following: Options (a) 2l + 1…
7 years ago
Memory
The weight of iron which will be converted into its oxide(Fe₃O₄) by the action of 18g
The weight of iron which will be converted into its oxide(Fe₃O₄) by the action of 18 g of steam on…
7 years ago
The set of quantom number for 19th electrons of chromium(Z=24) is
The set of quantom number for 19th electrons of chromium(Z=24) is Options (a) 4,0,0,+½ (b) 4,1,-1,+½ (c) 3,2,2,+½ (d) 3,2,-2,+½…
7 years ago
10 g of hydrogen and 64 g of oxygen were filled in a steel vessel and exploded
10 g of hydrogen and 64 g of oxygen were filled in a steel vessel and exploded. Amount of water…
7 years ago
Mass of one atom of X is 2.66 x 10⁻²³ g, then its 32 g is equal to
Mass of one atom of X is 2.66 x 10⁻²³ g, then its 32 g is equal to Options (a)…
7 years ago
The number of significant figures for the three numbers 161 cm, 0.161 cm
The number of significant figures for the three numbers 161 cm, 0.161 cm, 0.0161 cm are Options (a) 3,4,5 respectively…
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
Volume occupied by one molecule of water (density= 1 g cm⁻³) is
Volume occupied by one molecule of water (density= 1 g cm⁻³) is Options (a) 9 x 10⁻²³ cm³ (b) 6.023…
7 years ago
³⁵₁₇Cl and ³⁷₁₇Cl are two isotopes of chlorine. If average atomic weight is 35.5
³⁵₁₇Cl and ³⁷₁₇Cl are two isotopes of chlorine. If average atomic weight is 35.5 then ratio of these two isotopes…
7 years ago
The ratio of the difference in energy between first and second Bohr orbit
The ratio of the difference in energy between first and second Bohr orbit to that between the second and the…
7 years ago