14. Using the periodic table, identify the lightest member of each of the following groups: (a) noble gases (c) alkali metals (b) alkaline earth metals (d) chalcogens

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Q: Explain the important distinctions between eachpair of terms:(a) cathode rays and X-rays(b) protons…

A: Hi, since you have posted questions with multiple subparts. We will answer the first three subparts…

Q: Classify each element as a metal, nonmetal, metalloid.a) Antimony b) Strontium c) Phosphorus…

A: Non-metal:Non-metal is an element that mostly absences metallic character.Metalloid:Metalloid is one…

Q: An element "X" is an alkaline earth metal and reacts with element "Y" which is a halogen. What is…

A: The ionic compound formed when alkaline earth metal reacts with halogen given below.

Q: MCQ 118: In the Periodic table, the Alkaline earth metals are found in A. Period II B. Period III C.…

A: Ans C) group 11

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Q: The newly discovered element Nh (Nihonium), with atomic number 113, would be a member of which…

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Q: Using the periodic table, identify the lightest member of each of the following groups:(a) noble…

A: (a) Noble gases- group 18 consists of noble gases and these gases are helium (He), neon (Ne), argon…

Q: Using the periodic table, classify each of the following elements as a metal or a nonmetal, and then…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

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Q: Complete the table below. Where isotopic notation is required, enter the complete isotopic notation,…

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Q: Consider an ion with the symbol Y³ formed from a representative element (Y is an unknown element,…

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Q: 12. An unknown element has the following properties: conducts heat and electricity, dull, brittle.…

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Q: State the periodic law, and provide at least two examples to illustrate its meaning. Identify the…

A: The given problem is from the periodic properties of elements. The periodic law and corresponding…

Q: Question mentioned in attached file

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Q: Define the term monatomic ion?

A: The term monatomic ion has to be defined.

Q: Which of the following elements would be classified as a nonmetal? a.) silicon  b.) francium c.)…

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Q: SECTION T A. Name the following. 1 The term for elements with atomicity 3 2 Particles formed by…

A: General questions are answered following below.

Q: 2.90 grams of phosphorus is burned in the presence of oxygen and forms 5.14 grams of a phosphorus…

A: We can just subtract the mass of the phosphorus from the mass of phosphorus oxide and get mass of…

Q: What is the formula of the compound in which the atom combining ratios are: boron: hydrogen :…

A: Given : The ratio of elements in the compound = Boron : Hydrogen : Chlorine = 4 : 9 : 1

Q: Describe the electrical charges and relative masses of protons, neutrons, and electrons

A: Atomic Structure: The atomic structure can be described by saying that, atoms contain three types of…

Q: Which of the following categories includes the majority of the elements metalloids, nonmetals,…

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Q: Most elements are classified as _____. a.) metalloids b.) noble gases c.) metals d.) nonmetals

A: There are many elements in the periodic table with differing physical and chemical properties. Some…

Q: Is Phosphorus a cation or anion?

A: Positively charged cations and negatively-charged anions are formed when electrons lose from metal…

Q: Choose all of the following that apply to oşmium, Os. a. Metalloid b. Alkali metal Oc. Transition…

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Q: Little is known about the properties of astatine, At, becauseof its rarity and high radioactivity.…

A: Due to Astatine high radioactivity, very less information we are having:     a)  Astatine is solid…

Q: How many electrons, neutrons and protons would be found in an atom of oxygen-14 (atomic number 8)?

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Q: 12)Which of the following is an ionic compound?   Select one: A. Carbon dioxide B. Barium oxide C.…

A: Ionic compound if formed by transfer of electrons between two atoms.

Q: Which of the following refer to elements in D-block? O Inner transition metals O Metalloids O…

A: A transition metal can be defined as any element in the periodic table, which includes groups 3 to…

Q: Recognize the important subdivisionsof the periodic table: periods, groups(families), metals, and…

A: Recognize the important subdivisions of the periodic table: periods, groups (families), metals, and…

Q: ENRICHMENT Complete the concept map below by filling up the boxes with the appropriate concepts…

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Q: What is the most common ion of Lithium? How many neutrons does it have?

A: Most common ion of lithium = ?  Number of neutrons in this ion = ?

Q: Lithium is classified in which of the following groups? Question 2 options: a) alkali metals b)…

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Q: Write any two similarties between lithium and magnesium.

A: Magnesium and lithium exhibit a diagonal relation. Lithium differs from other alkali metals due to…

Q: Four of the boxes in the following periodic table are colored.Which of these are metals and which…

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Q: Completely the followin

A: Modern periodic table is divided into 7 periods and 18 groups  Based on differenciating electron…

Q: The symbol and atomic number of the lightest metalloid in Group 4A are:

A: Silicon (Si) is the lightest metalloid of Group lVA and its atomic number is 14.

Q: 15. (a) b) c) d) Identify the element that is described by the following information. Refer to a…

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Q: Among the 118 known elements, there are approximately equal numbers of metals and nonmetals. True or…

A: An element ia a pure substance made up of the same kind of atoms .At present 118 elements are…

Q: What is the formula of the compound in which the atom combining ratios are: nitrogen : oxygen = 2 :…

A: To get the empirical formula just put the number in the ratio as subscript.

Q: Answer true or false. (a) Mendeleyev discovered that when elements are arranged in order of…

A: Since you have posted questions with multiple sub-parts, we are entitled to answer the first 3 only.…

Q: On another planet, the isotopes of titanium have the given natural abundances. Abundance Mass (u)…

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Q: QUESTION 4 Which elements have the highest first ionisation energies? O those on the right side of…

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Q: What is a period in the periodic table? From what does it derive its name?

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Q: Define the terms period and group as they relate to the periodic table. Then, (ii) write an atomic…

A: Periodic table :-   A table with systematic arrangement of elements according to their properties in…