K.C.S.E Physics Q & A - MODEL 1997PP1QN34
A lithium atom has 3 protons in its nucleus. Complete the diagram in figure 14 by marking X in the appropriate shells show the electron distribution when the atom is not excited
In a sample there are 5.12 x 1020 atoms of krypton – 92 initially. If the half of krypton; 92 is 3.0s determine the number of atoms that will have decayed after 6s.
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FORM I - PHYSICS SYLLABUS
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FORM IV - PHYSICS SYLLABUS
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