1) Give the symbols not names of two elements in the same group as helium a) He and Be b) Ne and Ar c) Al and K d) N and Be e) Na and Cl f) Mg and H 2) Which of the elements in the first 20 elements of the Periodic Table has atoms with the greatest mass a) Calcium b) Magnesium c) Nitrogen d) Sulfur e) Chlorine f) lithium 3) Find the symbols for the elements aluminium, born, flourine and potassium. a) k, Al, B, F b) Na, Ca, Be, Mg c) Li, P, Si, Cl d) H, He, B, F e) Cl, Mg, Al, N f) Na, P, K, Ca 4) What are the names of the elements with the symbols Mg, Be, Li and N? a) Magnesium, Beryllium, lithium and Nitrogen b) Sodium, Chlorine, sulfur and Neon c) Magnesium, Boron, Chlorine and Neon d) Chlorine, Calcium, Argon and Nitrogen e) Magnesium, Beryllium, Lithium and Neon f) Sodium, Silicon, Calcium and Nitrogen
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Science 2.5
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