How many neutrons and protons are there in the following nuclei? \(_{6}^{13}\textrm{C}\), \(_{8}^{16}\textrm{O}\), \(_{12}^{24}\textrm{Mg}\), \(_{26}^{56}\textrm{Fe}\), \(_{38}^{88}\textrm{Sr}\).
\(_{6}^{13}\textrm{C}\): Atomic mass = 13
Atomic number = Number of protons = 6
Number of neutrons = (Atomic mass)(Atomic number) = 136 = 7
\(_{8}^{16}\textrm{O}\): Atomic mass = 16
Atomic number = 8 Number of protons = 8
Number of neutrons = (Atomic mass)(Atomic number) = 168 = 8
\(_{12}^{24}\textrm{Mg}\) : Atomic mass = 24
Atomic number = Number of protons = 12
Number of neutrons = (Atomic mass) (Atomic number) = 2412 = 12
\(_{26}^{56}\textrm{Fe}\) : Atomic mass = 56
Atomic number = Number of protons = 26
Number of neutrons = (Atomic mass)(Atomic number) = 5626 = 30
\(_{38}^{88}\textrm{Sr}\) : Atomic mass = 88
Atomic number = Number of protons = 38
Number of neutrons = (Atomic mass)(Atomic number) = 88 38 = 50
Give reasons for the following.
(i) King Tut’s body has been subjected to repeated scrutiny.
(ii) Howard Carter’s investigation was resented.
(iii) Carter had to chisel away the solidified resins to raise the king’s remains.
(iv) Tut’s body was buried along with gilded treasures.
(v) The boy king changed his name from Tutankhaten to Tutankhamun.
Find the mean deviation about the median for the data
xi | 15 | 21 | 27 | 30 | 35 |
fi | 3 | 5 | 6 | 7 | 8 |