What type of drug is Aminopterin and what it is used for

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#Question id: 19946

#XL - P Chemistry

If the value of azimuthal quantum number of an electron is 2, then which of the following values of magnetic quantum numbers is not permissible,

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#Question id: 19947

#XL - P Chemistry

An isotone of ₃₂Ge⁷⁶is (i) ₃₂Ge⁷⁷ (ii) ₃₃As⁷⁷ (iii) ₃₄Se⁷⁷ (iv) ₃₄Se⁷⁸.

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#Question id: 19948

#XL - P Chemistry

The fundamental particles which arc responsible for keeping nucleons together is

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#Question id: 19949

#XL - P Chemistry

The positron is as heavy as

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#Question id: 19950

#XL - P Chemistry

Atoms may be regarded as comprising of protons, electrons and neutrons. If the mass attributed to the neutrons were halved and that attributed to electrons were doubled then atomic mass of would

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#Question id: 19951

#XL - P Chemistry

How many electrons in an atom with atomic number 105 can have (n +l) = 8 ?