One gm of each .(1)H^(1), .(8)O^(16), .(...

One gm of each `._(1)H^(1), ._(8)O^(16), ._(6)C^(14), ._(92)U^(238)` have-

same atoms

same protons

same nucleons

Same electrons

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._(6)^(14)C and ._(8)^(16) O are ………..

Choose isotopes and isobars from the following: ""_(6)^(12)C, ""_(5)^(12)B, ""_(7)^(14)N, ""_(8)^(14)O, ""_(8)^(16)O, ""_(6)^(14)C, ""_(7)^(13)N

Complete the following : i. ._(7)N^(14)+._(2)He^(4)rarr ._(8)O^(17)+………. ii. ._(92)U^(235)+._(0)n^(1) rarr ._(55)A^(142)+._(37)B^(92)+……….

Calculte the binding energy per nucleon for ._(10)^(20)Ne,._(26)^(56)Fe and ._(98)^(238)U . Given that mass of neutron is 1.008665 am u , mass of proton is 1.007825 am u , mass of ._(10)^(20)Ne is 19.9924 am u , mass of ._(26)^(56)Fe is 55.93492 am u and mass of ._(92)^(238)U is 238.050783 am u .

Calculate the neutron - proton ratio for each of the following radioactive nuclides. a. ._(6)C^(14) b. ._(82)U^(238) c. ._(82)U^(232)

How many different combinations of water are possible from ""_(1)H^(1),_(1)H^(2),_(1)H^(3) and _(8)O^(16),_(8)O^(17),_(8)O^(16).

(a) On analysis a sample of uranium ore was found to contain 0.277g of ._(82)Pb^(206) and 1.667g of ._(92)U^(238) . The half life period of U^(238) is 4.51xx10^(9) year. If all the lead were assumed to have come from decay of ._(92)U^(238) , What is the age of earth? (b) An ore of ._(92)U^(238) is found to contain ._(92)U^(238) and ._(82)Pb^(206) in the weight ratio of 1: 0.1 The half-life period of ._(92)U^(238) is 4.5xx10^(9) year. Calculate the age of ore.

What is X in the nuclear reaction ._(7)N^(14) + ._(1)H^(1) rarr ._(8)O^(15) + X

Calculate the energy released in MeV in the following nuclear reaction : ._(92)^(238)Urarr._(90)^(234)Th+._(2)^(4)He+Q ["Mass of "._(92)^(238)U=238.05079 u Mass of ._(90)^(238)Th=234.043630 u Massof ._(2)^(4)He=4.002600 u 1u = 931.5 MeV//c^(2)]

By using the following atomic masses : ._(92)^(238)U = 238.05079u . ._(2)^(4)He = 4.00260u, ._(90)^(234)Th = 234.04363u . ._(1)^(1)H = 1.007834, ._(91)^(237)Pa = 237.065121u (i) Calculate the energy released during the alpha- decay of ._(92)^(238)U . (ii) Show that ._(92)^(238)U cannot spontaneously emit a proton.

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