Problem 85
Which set has strongest tendency to form anions? (1) \(\mathrm{Ga}, \mathrm{In}, \mathrm{Te}\) (2) \(\mathrm{Na}, \mathrm{Mg}, \mathrm{A} 1\) (3) \(\mathrm{N}, \mathrm{O}, \mathrm{F}\) (4) V, Cr, Mn
Problem 86
Highest covalent character is found in which of the following? (1) \(\mathrm{CaF}_{2}\) (2) \(\mathrm{CaCl}_{2}\) (3) \(\mathrm{CaI}_{2}\) (4) \(\mathrm{CaBr}_{2}\)
Problem 87
The element with electronic configuration \(1 \mathrm{~s}^{2} 2 \mathrm{~s}^{2} 2 \mathrm{p}^{6}\) \(3 \mathrm{~s}^{2}\) is (1) metalloid (2) metal (3) noblc gas (4) non-mctal
Problem 88
In the periodic table the metallic character with increase in atomic number (1) decreases in a period and increases in a group (2) increases in a period and decreases in a group (3) increases both in a period and in the group (4) decreases both in a period and in the group
Problem 90
Which of the following statement is false? (1) An clement having clectronic configuration \(1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{1}\) forms basic oxide. (2) Chloride of an clement \(\Lambda\) gave a neutral solution in water. In the periodic table the clement \(\Lambda\) belongs to III group.
Problem 91
Transition element exhibits variable oxidation states because they release electrons from the following orbitals. (1) ns and np orbitals (2) \((n-1) \mathrm{d}\) and ns orbitals (3) \((n-1)\) d orbital (4) ns orbital
Problem 93
Among the following group of clements the one whose clements can have positive as well as negative oxidation states. (1) \(\mathrm{H}, \mathrm{F}, \mathrm{O}\) (2) \(\mathrm{Na}, \mathrm{M}_{\mathrm{g}}, \mathrm{Al}\) (3) \(\mathrm{He}, \mathrm{Li}, \mathrm{Be}\) (4) \(\mathrm{H}, \mathrm{Cl}, \mathrm{Br}\)
Problem 94
The elements in the same period in the periodic table show increase in (1) Metallic nature with increase in atomic number (2) Electronegativity with increase in metallic character (3) Electroncgativity with increase in atomic number (4) Electropositivity with increase in atomic number
Problem 95
The valency shell of an clement \(\Lambda\) contains 3 electrons while the valence shell of another clement \(B\) contains 6 electrons. If \(\Lambda\) combines with \(\mathrm{B}\), the probable formula of the compound formed will be (1) \(\Lambda \mathrm{B}_{2}\) (2) \(\Lambda_{2} B\) (3) \(\mathrm{A}_{2} \mathrm{~B}_{3}\) (4) \(\Lambda_{3} B_{2}\)
Problem 96
Li and Mg shows similar properties because of similar (1) electric charge (2) ionic radii (3) charge/atomic radius (4) charge/(ionic radius \({ }^{2}\)
