Q. The letters denote sub-shells are

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Q. Configuration of 18 electrons (e⁻) in third principal quantum level in s=2, p=8 and d will be

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Q. Elements with more than 57 electrons require

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Q. The concept of Avogadro's number was given by

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Q. Avogadro's number is the collection of particles

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Q. Noble gases have complete

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Q. P block elements have electrons in their outermost shell

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Q. Octet rule is defined as an atom having electrons

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Q. The outermost shell of carbon consists of electron

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Q. The energy of orbital close to nucleus is

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Q. The outermost electron of nitrogen is present in

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Q. Transition elements have outer most sub-shell

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Q. Ground state electronic configuration of sodium is

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Q. When 6d orbital is complete, the incoming electron goes to

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Q. Two electrons in the same orbitals should have opposite spin is

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Q. 1 Kg of electrons have charge equals

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Q. They produce flashes on ZnS plate

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Q. The first theory of atom was proposed by

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Q. The e/m values for the positive rays is highest for

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Q. Electrons can revolve only in those orbits having fixed

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