42. Which of the following group make abridge between high electropositive andhigh electronegative elements49. Whichofthefollowingoneа. IА b. IПАс. ПАd. IVAelectromagnetic spectrumhasthe43. Down the group trend in metallichighest frequencycharacter in VIAa. Cosmic raysc. IR spectraincreasesc. not changeb. Gamma raysd. Radioа.b. decreasesd. all are possible50. Which of the following need less energy44. Elements of which of the followinga. Rotationc. both a and bshow inert pair effect resulting ionicb. vibrationd. electronic excitationbonds formationа. IА b. ПАс. ШАd. IVA45. At high energy state inert pair effect isvanished and divalent nature of IVAelements is converted to tetravalentnature by the process ofa. Dimerizationc. bothb. hybridizationd. none46. Which of the following formula gives usmore accurate information about asubstancea. Molecular formulab. empirical formulac. chemical formulad. structural formula47. Physical and chemical properties of asubstance can be identified by itsa. Molecular formulab. empirical formulac. chemical formulad. structural formula48. Generally the interaction of light withmatter is calleda. Spectroscopyc. instrumentationb. analysisd. chemistry

A periodic table is divided into groups and periods: There are 8 groups that belongs to main group…

42. Which of the following group make a bridge between high electropositive and high electronegative elements а. IА b. ПА с. ША d. IVA 43. Down the group trend in metallic character in VIA c. not change d. all are possible a. increases b. decreases 44. Elements of which of the following show inert pair effect resulting ionic bonds formation а. IА b. П А с. ША d. IVA

42. Which of the following group make a bridge between high electropositive and high electronegative elements а. IА b. ПА с. ША d. IVA 43. Down the group trend in metallic character in VIA c. not change d. all are possible a. increases b. decreases 44. Elements of which of the following show inert pair effect resulting ionic bonds formation а. IА b. П А с. ША d. IVA

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter3: Atomic Shells And Classical Models Of Chemical Bonding

Section: Chapter Questions

Problem 25P

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