Question textComplete the following sentences to describe the trends in the periodic tableThe electronegativity of an atom Answer 1 Question 27[select: , increases, decreases] down a group and Answer 2 Question 27[select: , increases, decreases] along a periodThe atomic radius of an atom Answer 3 Question 27[select: , increases, decreases] down a group and Answer 4 Question 27[select: , increases, decreases] along a periodThe first ionisation energy of an atom Answer 5 Question 27[select: , increases, decreases] down a group and Answer 6 Question 27[select: , increases, decreases] along a period多项填空题