Which of the following is the smallest in size?
Which of the following is the smallest in size?
Options
(a) Na⁺ (b) F⁻ (c) O²⁻ (d) N³⁻
Correct Answer:
Na⁺
Explanation:
Na⁺ < F⁻ < O²⁻ < N³⁻. All are isoelectronic, effective […]
Easy
The correct order of acidic strength of oxides of nitrogen, is
The correct order of acidic strength of oxides of nitrogen, is
Options
(a) NO < NO₂ < N₂O < N₂O₃ < N₂O₅ (b) N₂O < NO < N₂O₃ < N₂O₄ < N₂O₅ (c) […]
According to MO theory which of the following lists ranks the nitrogen species
According to MO theory which of the following lists ranks the nitrogen species in terms of increasing bond order?
Options
(a) N₂²⁻ < N₂⁻ < N₂ (b) N₂ < N₂²⁻ < N₂⁻ (c) […]
Set of isoelectronic species is
Set of isoelectronic species is
Options
(a) N₂,CO₂,CN⁻,O (b) N, H₂S, CO (c) N₂,CO,CN⁻,O₂⁺² (d) Cl,Mg,Ca
Correct Answer:
N₂,CO,CN⁻,O₂⁺²
Explanation:
Isoelectronic means equal electric, which means the atom or group have the same number […]
Which of the following is non-permissible?
Which of the following is non-permissible?
Options
(a) n=4, l=3, m=0 (b) n=4, l=2, m=1 (c) n=4, l=4, m=1 (d) n=4, l=0, m=0
Correct Answer:
n=4, l=4, m=1
Explanation:
No explanation available. Be […]
For which one of the following sets of four quantum numbers, an electron will have
For which one of the following sets of four quantum numbers, an electron will have the highest energy?n=3, l=2, m=1, s=1/2
Options
(a) n=4, l=2, m=-1, s=1/2 (b) n=4, l=1, m=0, s=-1/2 (c) […]
Which of the following sets has strongest tendency to form anions ?
Which of the following sets has strongest tendency to form anions ?
Options
(a) Ga, In, Tl (b) Na, Mg, Al (c) N, O, F (d) V,Cr, Mn
Correct Answer:
N, O, F
Which of the following is not permissible arrangement of electrons in an atom?
Which of the following is not permissible arrangement of electrons in an atom?
Options
(a) n = 5, l = 3, m = 0, s = +1/2 (b) n = 3, l= 2, […]
Which one of the following ions will be the smallest in size?
Which one of the following ions will be the smallest in size?
Options
(a) Na⁺ (b) Mg²⁺ (c) F⁻ (d) O₂⁻
Correct Answer:
Mg²⁺
Explanation:
Greater is the positive charge on atom, large […]
Which of the following pairs has both members from the same group of periodic
Which of the following pairs has both members from the same group of periodic table?
Options
(a) Mg-Ba (b) Mg-Cu (c) Mg-K (d) Mg-Na
Correct Answer:
Mg-Ba
Explanation:
Mg—Ba; both belongs to II […]