Questiоn 4 Cоnsider the diаgrаm representing аn atоm of a certain element. Right click on the following button to open the DIAGRAM in a separate tab. 4.1 Determine the: 4.1.1. number of protons (2) 4.1.2. energy level of the outer most shell (1) 4.1.3. number of core electrons (1) 4.2 Write the standard notation for the electron configuration of this atom. (3) 4.3 Write down the name of this atom. (1) 4.4 Show the electron configuration of a potassium ion by using an Aufbau diagram. (3) 4.5 Two isotopes of lithium are composed as follows: lithium-6 = 7,6% and lithium-7 = 92,4%. Calculate the relative atomic mass of lithium. (3) [14]
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