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The compound XCl is classified as Ionic if x represents the element?

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Nitrogen can ionically bond with an unknown element X from group 2. How many ions of element X are required to create a stable ionic compound with nitrogen? A) 2 B) 3 C) 4 D) There is not enough information.

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The elements of which group are nonreactive? halogens alkaline earth metals noble gases alkali metals

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How many elements are in one molecule of Methane? How many elements are in one molecule of Ammonia? How many elements are in one molecule of Vinyl Alcohol? How many elements are in one molecule of Ethylene? How many elements are in one molecule of Styrene? What is each of their chemical formulas? Why are all of these considered compounds?

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How do you tell if an element is at an excited state based on its electron configuration?

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What elements does silver have.

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Explain how are elements classified and provide an example

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Which of these is a pure substance? a penny sugar ocean water iced tea

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Help!Which elements can form basic compounds? Check all that apply. sulfur rubidium arsenic selenium silicon xenon antimony

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What is the only element in group 1 of the periodic table that forms covalent bondhydrogen lithiumpotassium sodium

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Which element can form acidic compounds? Check all that apply. Sulfur rubidium arsenic selenium silicon zenon antimony Its not just silicon and arsenic

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An element is defined by its number of what?

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Water (H2O) is composed if the same elements as carbon monoxide (CO). How do their properties compare? A.They have different properties because the arrangement of atoms is different. B.They have the same properties because they have the same atoms. C.They have different properties because they have different atoms. D.They have the same properties because they have the same arrangement of atoms.

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If a sample of pure silver contains 3.35 x 10^22 atoms of silver, how any moles of silver are in the sample? 17.9 mol 2.82 mol 0.180 mol 0.0556 mol

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When two or more substances combine, but each keeps its own properties, the new combination is called a(an) A) Element B) Mixture C) Compound D) Homogeneous substance

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If the atomic number of an element is 16, then it has 16 electrons. True False

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Is a rock a mixture, element, compound or mineral

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The elements with the highest ionization energy and thus the most unreactive are:

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Why do elements in a group on the periodic table have similar chemical properties? a. similar atomic masses b. similar atomic numbers c. same number of outermost electrons d. same number of protons

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Which of the following elements is chemically most similar to chlorine? A) helium b) sodium c) bromine d) hydrogen

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Why do elements in Period 2 have the highest electronegativity?

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Which of these is a mixture? A. Carbon Dioxide B. salt water C. calcium D. potassium

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What is another name for the rare earth elements? a. Group 1 c. Group 6 b. Lanthanide d. Alkaline Earth

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What do two different neutral isotopes of the same element have in common?

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The compounds shown below are written using the chemical symbols for the elements that they contain. The key shows the names of each element. KEY Br = bromine C = carbon Cl = chlorine H = hydrogen K = potassium O = oxygen P = phosphorus Which compound could be classified as organic? A. CH4 B. P2O5 C. KBr D. HCl

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The compounds shown below are written using the chemical symbols for the elements that they contain. The key shows the names of each element. KEY Br = bromine C = carbon Cl = chlorine H = hydrogen K = potassium O = oxygen P = phosphorus Which compound could be classified as organic? A. CH4 B. P2O5 C. KBr D. HCl

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2. A sample of table sugar (sucrose, C12H22O11) has a mass of 1.202 g. a. Calculate the number of moles of C12H22O11 contained in the sample and record in Table 1. Show your work. b. Calculate the moles of each element in C12H22O11 and record in Table 1. Show your work. c. Calculate the number of atoms of each type in C12H22O11 and record in Table 1. Show your work.

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Qual elemento possui o maior numero de atômico

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Which element, if combined with sulfur, will have the greatest attraction for the sulfur electrons?

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Predict the electronegativity of the yet undiscovered element with Z = 119.

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