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Firstly, you should think of what would react to form Zinc chloride and what Zinc chloride even is.Looking at the periodic table and with knowledge from class, I as a student should know that this is an exam...

This question is designed to test a students knowledge of electronic configuration in elements, and their ability to use this knowledge to assign a reasoning to the trend given. The general trend is an incre...

Number of particles of water = avogadro constant x amount in molTherefore6.02 x10 23 x 0.75= 4.515 x10 23 There are 3 atoms in every molecule of water so we need to multiply the number of particles by 34.515...

First ionisation energies decrease down groups in the Periodic Table:-larger atomic radius-increased nuclear charge is outweighted by increased shielding-reactivity increases down the group as it's easier to...

Both Cl and I in Group 7. Both have 7 electrons in its outer shell and require 1 electron to obtain a full shell. Reactivity of these halogens correspond to its ability to gain an electron. Cl can gain an el...