A. Two sigma and two pi B. Two sigma and one pi C. One sigma and two pi D. One sigma and one pi
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A. Five sigma and nine pi-bonds B. Nine sigma and nine pi-bonds C. Six sigma and eight pi-bonds D. Nine sigma and seven pi-bonds
A. Two orbitals at 180° B. Three orbitals in a plane C. Four orbitals directed tetrahedrally D. Two perpendicular orbitals
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A. Hydrogen bond B. Ionic bond C. Covalent bond D. None of these
A. Their atomic size are nearly the same B. They have unpaired electrons C. Their IE are similar D. They are all metals
A. C- C bonds B. C=C bonds C. Mobile electrons D. Bonded electrons
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A. Is always negative B. Is always positive C. Is always zero D. Can be positive or negative
A. Tungsten B. Nobelium C. Titanium D. Niobium
A. Zn, Hg B. Mo, W C. Fe, Co D. Nb, Ta