Chemistry

Q21

The atomic radius decreases in a period due to:

Q22

The enthalpy change of a reaction does NOT depend on:

Q24

The molecules of CO2 in dry ice form:

Q25

The removal of 7th electron from an element of Group VI of the periodic table needs three times more energy than:

Q26

Industrial materials thermal power stations are coated with:

Q29

The removal of electrons one by one from an atom by a specific sequence of ionization energies are termed as:

Q30

Which one is true about isotope?

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