Which group of the periodic table is most likely described by questions 1-4? 1)
ID: 1072932 • Letter: W
Question
Which group of the periodic table is most likely described by questions 1-4?
1) These elements are very strong oxidizers.
2) These elements have a charge of +2 when forming ionic compounds.
3) These elements are radioactive.
4) These elements are rare, have high densities, and are used for various industrial
purposes.
For problems 5& 6, describe the oxidation state of each element when it forms ionic compounds:
5) Oxygen.
6) Gallium.
For problems 7& 8, determine the number of valence electrons each element has:
7) Sulfur.
8) Helium.
The following electron configurations belong to which elements:
1) 1s22s22p63s1 ____________________________________
2) [Kr] 5s24d10 _____________________________________
Question 2:
Define proteins and amino acids.
Mention the functions of carbohydrates.
Answer all questions Ouestion 1: (5 Marks) Using the periodic table answer these questions: Periodic Table ILA IVA VA. VIA VIIA He Li Be of Elements B C N to F Ne 3 Na Mg IllB VB VB VIB VIIB B AI Si P S CI Ar Ga Ge AS 5 Rb Sr Y Zr Nb Mo Ru Rh Pd Ag Cd in S In Sb Te 6 Cs Ba La Hf Ta W Re Os Ir Pt Au Hg TI Pb Bi Po At Rn 89 05 106 107 108 09 7 Fr Ra +AC 06 107 108 110 Rf A Lanthanide 58 59 60 61 62 63 64 65 66 67 68 69 70 71 Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Ce Pr Nd Series Actinide Th Pa U Series Legend click to find out more... H gas i solid Br liquid Tc-synthetic Transition Metals Non-Metals Rare Earth Metals Halogens Alkali Metals Alkali Earth Metals Other Metals Inert ElementsExplanation / Answer
Which group of the periodic table is most likely described by questions 1-4?
1) These elements are very strong oxidizers.
Answer - Halogen are very strong oxidizer
because halogens require only one electron to complete octate and thay are more electronegative and gave very low bond dissociation energy and negative electon gain enthalpy.
2) These elements have a charge of +2 when forming ionic compounds.
Answer - group IIA elment - Be, Mg, Ca, Sr, Ba, Ra
because these element outer shell contain two electron they loose two elctron and get +2 cahrge
3) These elements are radioactive.
Answer - all actinides series element
4) These elements are rare, have high densities, and are used for various industrial
purposes.
Answer - 0 group element He, Ne, Ar, Kr, Xe.Rn
For problems 5& 6, describe the oxidation state of each element when it forms ionic compounds:
5) Oxygen.
Answer - - 2
6) Gallium.
answer - + 3
For problems 7& 8, determine the number of valence electrons each element has:
7) Sulfur.
Answer - 6 elecron
8) Helium.
Answer - 2 electron
The following electron configurations belong to which elements:
1) 1s22s22p63s1 ____________________________________
Answer - Sodium (Na)
2) [Kr] 5s24d10 _____________________________________
Answer - Cadmium (Cd)
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