Related InterviewSolutions

• The configuration to second excited state of the element is (O) electronic with `O_(2)` or `P^(-)` or `Cl^(+)` isA. `[Ne]3s^(2)3p_(x)^(2)3p_(y)^(1)3p_(z)^(1)`B. `[Ne]3s^(2)`C. `[Ne]3s^(1)3p_(z)^(1)3p_(y)^(1)3p_(z)^(1)3d_(xy)^(1)3d_(yz)^(1)`D. `[Ne]3s^(2)3p_(x)^(1)3p_(z)^(1)3p_(xy)^(1)`
• Which of the following has firstly organise the elements according to same trend ?A. NewlandB. MendeleefC. Lother MeyerD. Dobereiner
• The electron affinity values (in `kJ mol^(-1))` of three halogens, `x,y`, and `z`are, respectively, `-349, -333`, and `-325`. Then `x, y`, and `x`, are respectively,A. `F_(2), Cl_(2)` and `Br_(2)`B. `Cl_(2), F_(2)` and `Br_(2)`C. `Cl_(2), Br_(2)` and `F_(2)`D. `Br_(2), Cl_(2)` and `F_(2)`
• Calculate electronegativity of carbon at Pauling scale Given that : ` E_(H-H) =104 .2 kcal "mol"^(-1) E_(C-C) =83.1 kcal "mol"^(-1)` , `E_(C-H) =98.8 kcal "mol"^(-1)`. Electronegativity of hydrogen `=2.1`.A. `0.498`B. `0.598`C. `2.134`D. `2.597`
• The atomic numbers of elements A,B,C and D are Z - 1, Z, Z + 1 and Z + 2 respectively. If B is a noble gas, choose the correct statement among the following statements : I. A has higher electron affinity. II. C exists in +2 oxidation state. III. D is an alkaline earth metal.A. I and IIB. II and IIIC. I and IIID. I, II and III
• Which one of the following is correct increasing order of size ?A. `Mg lt Na^(+)lt F^(-)lt Al`B. `Na^(+)lt Al lt Mg lt F^(-)`C. `Na^(+)lt F^(-)lt Al lt Mg`D. `Na^(+) lt F^(-)lt Mg lt Al`
• The one with the largest ionic size isA. `O^(2-)`B. `Mg^(2+)`C. `F^(-)`D. `Na^(+)`
• Among the following, the element with highest ionisation potential isA. boronB. carbonC. oxygenD. nitrogen
• Which one of the following statements is false ?A. The electron affinity of chlorine is less than that of fluorineB. The electronegativity of fluorine is more than that of chlorineC. The electron affinity of bromine is less than that of chlorineD. The electronegativity of chlorine is more than that of bromine
• The pair in which the ionisation energy of first species is less than that of second isA. N, PB. `Be, Be^(+)`C. S, PD. `N, N^(-)`