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lodine is a member of which family? noble gases alkaline earth metals alkali metals none of...
in their compounds, the charges on the alkali metals and the
alkaline earth metals are _ and _ respectively
E) O2 . In their compounds, the charges on the alkali metals and the alkaline earth metals are respectively. and
valence electrons, [15] The halogens, alkali metals, and alkaline earth metals have respectively, A) 7,4, and 6 B) 1,5, and 7 C) 8,2, and 3 D) 7, 1, and 2
Discussion Choose a type of element on the periodic table (noble gases, alkali metals, halogens, etc.) and list the characteristics associated with those elements. Do humans use these elements, and how? Do their unique properties contribute to their usefulness to people? ((please I need 100 words about this subject))
45. a) Chalcogens b) Alkali metals c) Alkaline carth metals d) Halogens c) Noble gases 46. When the cquation: AINOh+NaS a) 2,3,1,6 b) 2,1,3,2 c) 4,6,3,2 d) 2,3,2,3 47 reaction a) NH4CI NH3 + HCI b) 2Mg+02 2Mgo c) 2N2+3H2 2NH3 d) 2CH4 + 402-2C02+4H20 48. Which of the following are combustion reactions? CH4 (g) + O2 (g) → CO2 (g) + H 201) b) a) CaO (s)+ CO2 (g)-CaCO3 (s) c) A. 1 and 4 B. 1,2,3 and4 C....
9. Which elements have a partially filled p sublevel in their electron configuration? or files A) alkali metals B) alkaline earth metals C) halogens D) noble gases E) transition metals 1st 3 CHEM 1 10. Which element has the abbreviated electron configuration [Ne]3s23pl? Α) ΑΙ B) P C ) Si DCI E) Ar 11. What is the abbreviated electron configuration for Fe? A) [Ar]4s9 B) [Ar]3d C) [Ar]45236 D) [Ar]4:24p6401 E) [Ar]4,2347
9. Differentiate between the following terms with examples. a. Alkali metals and alkaline earth metals b. Ionization and ionization energy c. Electronegativity and electron affinity
complete the sentences regarding alkaline earth
metals
The Group 2A(2) elements are called alkaline earth metals because their oxides give (alkaline) solutions and melt at such temperatures that they remained as solids ("earths") in the alchemists fires. denser low for 2A metals than larger lower The melting and boiling points are much for the corresponding 1A metals. ences smaller oxidizing Compared to corresponding Group 1A(1) elements, Group 2A(2) elements have metallic bonding and atomic sizes which makes them harder and...
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A is a compound, B is a element and C is a mixture. QUESTION 12 Identify the highlighted period or family O Alkaline Earth metals O Noble gases O Chalcogens O Alkali metals O Halogens QUESTION 13 vaporization for water is 540 calg, how many kilocalories are released when 5.0 g of steam is converted to l O 110 kcal O5.4 kcal 5.4 kcl
have the lowest first ionization energies of the groups listed. Halogens Alkaline earth metals Transition elements Alkali metals How many bonding electrons are in the Lewis structure of carbon monoxide, CO? 3 02 Consider the following electronegativity values: H = 2.1, CI = 3.0, F = 4.0 Which molecule below would you expect to have the more polar bond? HF HCI F2 CIZ Which compound below is a nonpolar molecule AND has a linear molecular geometry? ОСНА BeCl2 ОН20 SCI2
7. New Dec 11 2018. Which of the following is acidic when dissolved in water? SO, b. NO c. Na-O d. CaO Two of these a. e. NEW July 27, 2019. Elements of moderm periodic table are arranged according to increase in Group 2A elements are called and group 7A elements of periodical table are called.. 8. , respectively, atomic number /Alkaline earth metals/ noble gases b. a. atomic number /alkali metals / alkaline earth metals atomic number /Alkaline earth...