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Periodic table easy Question just say what element it is?
1.what element that is a only a halogen in PERIOD 5 in the periodic table of elements
2. what element that the smallest atom in period 3
3.first element of the actinide group
4.element that is the lightest in the alkaline earth metals
Make sure you put the number before the answer
3 Answers
- 10 years agoFavorite Answer
1. Iodine (I) [halogens belong to group 7 of the periodic table. Iodine is placed at period 5, group 7]
2. Chlorine (Cl) [atomic size decreases across the period. Argon is the last element in the period, but it has negligible size because it is a gas]
3. Actinium [see a periodic table reference]
4. Beryllium(Be) [the alkaline earth metals belong to group 2; and atomic size increases down the group; Beryllium is the first element in group 2 ]
- Anonymous10 years ago
1.Iodine
2.Chlorine
3.Actinium
4.Beryllium
