12 yr ago the average age of a husband and a wife was 20 yr .The average remains the same today when they have two children. What is the present age of the youngest child if they differ in age by 2 yr.

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#Question id: 19610

#XL - P Chemistry

Which of the following molecules have trigonal planar geometry?

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#Question id: 19611

#XL - P Chemistry

During change of O2 to O₂^2- ion, the electron adds on which of the following orbitals?

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#Question id: 19612

#XL - P Chemistry

In which of the following pairs, the two molecules have identical bond orders:

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#Question id: 19613

#XL - P Chemistry

Ionic bonds will be formed more easily between elements with comparatively:

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#Question id: 19614

#XL - P Chemistry

The study of reaction kinetics is called __________.

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#Question id: 19615

#XL - P Chemistry

The reaction rate constant can be defined as the rate of reaction when each reactant’s concentration is ___________.