Question 24 Which statement below is not correct? 1. Calcium is an alkaline earth metal. 2. Silicon is a metalloid. 3. Fluorine is a nobel gas 4. Sodium an alkali earth metal O 1 3 2)

Q: PART 2: Completion. Write the correct term that best completes the statement. 1. The vertical…

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Q: 5. The image on the right is Set D (Model 3). a. Draw an electron to the left of the 2 protons. b.…

A: Atom consists of electrons, neutrons and protons.  Protons and neutrons are together known as…

Q: Family # of Valence E- Reactivity Metal/Nonmetal Alkali High reactivity Metals Halogens Noble Gases

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Q: Write the formula for each of the following compounds that contain a polyatomic ion. a. cobaltic…

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Q: Iron has a density of 7.87 g/mL. If 52.4 grams of iron is placed into a graduated cylinder…

A: Density is a physical quantity that can be determined with the help of the mass and volume of the…

Q: State two differences between a metal and a nonmetal.

A: Metal Non-metal Metals are electropositive. Metals are good conductors of electricity.…

Q: Which of these elements form two sta oxides? A Silicon B Beryllium C Sulphur D Argon

A: Explanation : The two stable oxide of sulfur are 1. sulphur dioxide, SO2 2. sulphur trioxide, SO3…

Q: 1.Who created the first periodic table? 2. How did this Russian scientist first arranged the…

A: [1.] Dmitri Mendeleev  [2.] Petersburg( Russia), Russian chemist who developed the periodic…

Q: Transition metals are good conductors of electricity because of their sea of electrons Oability to…

A: (1). Substances through which heat and electricity can easily pass are called conductors. For…

Q: 11. The name and atomic number of your favorite metalloid is

A: Metalloids are the pure elements that has characterstic properties of both metals and non metals.…

Q: Part A What is an ion? An ion is a charged particle. O An ion is a neutral particle.

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Q: 10. 11. The compound has offensive smell of rotten eggs. 12. The Element with the highest melting…

A: The presence of hydrogen sulfide and its associated odor often indicates the decomposition or…

Q: Decide which element probably forms a compound with oxygen that has a chemical formula most and…

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Q: The fact that vitamin C extracted from rosehips and vitamin C prepared in the laboratory is the same…

A: The correct answer is the Law of Constant Composition.   The Law of Constant Composition states that…

Q: 35. What is the total number of electrons in a phosphorus ion?

A: The phosphorous atom symbol is P which has the atomic number 15.

Q: Based on your understanding of the relationships between the structures and physical properties of…

A: Metals have high melting point.Generally metals are hard except Li, Na and K.Metals are generally…

Q: What is the relative abundance of each element in out atmosphere? Oxygen [Select] Nitrogen [Select]…

A: The atmosphere is composed of nitrogen, oxygen, argon, carbon dioxide, and other gases. Nitrogen,…

Q: A meteorite is found to contain the two naturally occurring isotopes of silver shown below. 107Ag…

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Q: Answer the question below. Use the rubric in the materials for help if needed. Use details to…

A: Before the modern periodic table was set up, many people proposed the structure of periodic table.…

Q: Group A column in the periodic table Period Plutonium A main group element Titanium An inner…

A: Given is table.

Q: Question 18 Which group is sodium (Na) in? O alkaline earth metals O noble gases O halogens O alkali…

A: Sodium (Na) is present in the group 1, which is known as Alkali metals.

Q: How many core electrons does nickel contain? O 26 O 18 O 2

A: How many core electron in Nickel ?

Q: QUESTION 18 A is a Group 5A element. B is a Group 7A element. They form the molecule AB3.The…

A: Since you have asked multiple questions, we are solving first question for you. For remaining…

Q: 3. What type of substances are magnesium chloride, sodium chloride, and calcium chloride?

A: The question is based on the concept of chemical bonding. we have to identify the nature of…

Q: st Laboratory Questions: 1. Compare and contrast an ion from an isotope.

A: Ions and isotopes are two important concepts in chemistry that are related to the structure and…

Q: element is 5 X 24 Which a chromium b) germanium iron D) barium

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Q: Decide which element probably forms a compound with chlorine that has a chemical formula most and…

A: The chlorine and aluminum formed a compound which has chemical formula AlCl3 Aluminum belongs to the…

Q: 1.)chlorine Express your answer as an ion. 2.)cesium Express your answer as an ion 3.)gallium…

A: 1.)chlorine belong to halogen family , so ion form will be-    Cl-

Q: state and explain the position of Nitrogen in the periodic table

A: We have to state and explain position of nitrogen in periodic table

Q: Pb 2+ Pb 4+ Hg lead(II) ion lead(IV) ion mercury(II) ion Cobalt(II) ion Cobalt(III) ion Nickel(II)…

A: The name of a monatomic cation is simply the name of the element followed by the word ion.

Q: For each of the following atomic numbers, use the periodic table to write the formula (including the…

A: The element mostly liked form is based on the concept of the octet rule so that the electrons gained…