What is the difference between Ba, Ba(NO3)2, and Ba+2? Can they be used interchangeably? Why or why not?

Q: Give the symbol for an element that is 1) a transition metal in the fourth period from the following…

A: The symbol of elements can be written on the basis of the above provided description by using the…

Q: Find the no. Of Fe+2 ion in 10 mole of Fe0.930 .

A: Since it is not mentioned how Fe is converting to Fe2+, I'm assuming that all of Fe is converting to…

Q: 1) BH, 2) NUOH, H,0, Na, NH, A b) D. 2) CH,on 2) NaO, 1,0, 2) NatSO, H,0

A: Alkyne reduces to Trans alkene in the presence of Na, NH3.And forms enol with BH3, NaOH. Alkene…

Q: What are the chemical symbols and atomic number of Barium Ba and Magnesium Mg

A: According to the periodic table Barium belongs to group 2 ,while magnesium also belongs to group 2 .

Q: Where does the 3.77 come from, if you don't mind me asking?

A: The equilibrium constant of a cell reaction can be determined by the following reaction: E=0.059nlog…

Q: For question 16 to 18, refer to the following Periodic Table. a h i k e d 16. Which of the following…

A: Periodic table is arrangement of elements on the basis of atomic masses.

Q: (A) n=3,7=2 (B)n=42=3

A: ml is the magnetic quantum number. Magnetic quantum number represents the orbitals.  Possible values…

Q: What do 14C+ , 15N, and 17F-  have in common?     the same number of electrons     the same…

A: no of electron 14C+=

Q: (3a-101-27) Would you agree to buy 1.23 x 102 gold atoms for $27? Explain why or why not, showing…

A: The number of gold atoms is = 1.23x1021 The cost of these gold atom is = $27 The current price of…

Q: 9: Which of the following is an alkali metal? A) Zr B) Rb C) Cs D) Te 10: The symbols for Potassium,…

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Q: 1. BH, THE 2 HO 3 Bri

A:

Q: Iodine (I) would have chemical properties most similar to which of the following elements Te Rb…

A: Generally we know In periodic table there are 7 periods and 18 groups. Now in a group, all elements…

Q: 2b. A student formulates the following hypothesis: "If phosphorus were to form a positive ion, P**,…

A: The atomic radius of an element is provided as the distance between the center of the nucleus and…

Q: The element belonging to group 3A and period 4 is Gallium Scandium Silicon Aluminum

A: The given questions asks about the identity of element which belongs from 4th period and 3A group.

Q: Suggest the formula of the acif used to prepare ca3(po4) 2

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Q: Mercury has six isotopes with significant natural abundance: 198Hg (10.0%), 199Hg (16.9%), 200Hg…

A: Isotopes are elements with same atomic number but different mass numbers. Almost all elements have…

Q: Which of the following elements is the largest?   a barium b titanium c rubidium d sodium

A: Atomic size decreases across a period from left to right, while increases down the group.

Q: +] P. Bb Tests-CHE-100-01Y Spring 22 * Question Completion Status: QUESTION 9 Which is true…

A: Everything in the world wants to get maximum stability and minimum energy and for each element wants…

Q: Which element is not a main-group element?a) Se                      b) Mo                     c) Sr…

A: Main-group elements: S-block and P-block elements are knows as main-group elements. They are,…

Q: NaCl is a composite material because it has both Na and Cl. True or False?

A: Given: NaCl is a composite material because it has both Na and Cl

Q: What charge would exist on chlorine (#17) after it reacts with hydrogen (#1)?

A: The correct option is(d) i.e partial negative. The electronegativity of H = 2.20  The…

Q: Which equation correctly represents the first ionization of calcium? Group of answer choices Ca (g)…

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Q: Give the symbol for an element that is : 1. A transition metal in the fourth period from the…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: Determine the number of atoms of each element in the following molecules. Write the element symbol…

A: The molar mass of the given compound is as follows: K2CO3

Q: Fe= 55.15 o=16.08 N= 14.11g give molecules, atoms and ions in .650moles of Fe(NO2)2 please show…

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Q: Visited Smallest H2A 3A 4A 5A 6A 7A He Li Be BCN O F Ne Na Mg 38 48 58 68 78 88- 1B 2B Al Si P S C1…

A: Isoelectronic species : They have same number of electrons as their electronic configuration is…

Q: what are 2 incompatible elements? are calcium and chlorine incompatible?

A: Rubidium, Barium, Uranium, and Lanthanum are incompatible elements.

Q: Of the elements listed below, which one would be a poor conductor of heat and electricity? a) Mg b)…

A: Which element among the following Mg, CS, Se, Sn & Zn   is poor conductor of heat and…

Q: The correct chemical formula for the combination of Ca2+ and PO43- is:

A: The combination of  Ca2+ and PO43-    :

Q: Among Cl-, Ar, K+, Ca2+, Br-, Kr, Rb+, and Sr2+, which one has the largest radius?

A: Isoelectronic species are those species which have same number of electrons in them. And the radius…

Q: Consider Cr-54, Fe-54, Fe-58 and Ni-58 , which of this are isobars and which are isotopes

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Q: 3. FeSO, + K,Cr,0, + H,SO, → K,SO, + Cr.(So.), + Fe,(SO.); + H,0 4. MNSO, + PbO, + H,SO, → HMNO, +…

A: Oxidation number or oxidation state basically indicate the electrons lost or gained by atom.  For…

Q: What do 14C+ , 15N, and 17F-  have in common?     the same number of protons     the same number…

A:

Q: What do you mean by SAR? why it is important in Medicinal chemistry? Explain briefly

A: SAR means Surface Activity Relationship. This relationship is between the chemical structure of a…

Q: What is equivalent weight of Hydrochloric acid if you know the atomic weight H = 1, Cl = 35.5

A: The given data- The molar mass of Hydrogen = 1 The molar mass of chlorine = 35.5 To calculate =…

Q: 7. which isotope of phosphorus kept under water red Black white violet

A: Answer :- White  -------------------------------------------------------------------------

Q: Which of the following elements is the least metallic?   a. Aluminum   b. Phosphorus   c. Magnesium…

A: The least metallic elements are generally placed at the right-side upper corner of the periodic…

Q: 1. The literature value for the Kg of Ca(OH), at 25°C is 4.68 x 10. How does the value you…

A: #1: The literature value of Ksp of Ca(OH)2(s) = 4.68*10-6  Experimental value of Ksp of Ca(OH)2(s) =…

Q: The following table gives numbers of electrons, protons, and neutrons in atoms or ions of a number…

A: An element's fundamental unit is the atom. An atom is a unit of matter that cannot be broken down…

Q: Where does the 2.303 come from?

A:

Q: How many hydrogen atoms are in 1.0 g of H20 (MW = 18)? %3D

A: Given :- amount of H2O = 1.0 g  Molar mass of H2O = 18 g/mol  To calculate :-  Total hydrogen atoms…

Q: (3a-104-17) Would you agree to buy 1.23 x 1021 platinum atoms for $17? Explain why or why not,…

A: Given : Number of atoms = 1.23 X 1021 atom Cost of purchase = $17 And current price of platinum = $…

Q: Give the names and chemical symbols for the three isotopes of hydrogen.

A: The name and chemical symbols for the three isotopes of hydrogen has to be given,

Q: Chemical formula of Mg2+ and PO43

A: Chemical formula of an ionic compound can be formed by criss-crossing the valencies of ions.

Q: To produce 130 g of CeH12O6 , how many kJ of energy would you need based on the reaction above? Show…

A: 6 moles of CO2(g) reacts with 6 moles of H2O(l) using 2800 kJ of energy to produce 1 mole of C6H12O6…

Q: halogen noble gas

A:

Q: 19 Which of the following statements is correct about one mole of ethane gas, C2H4 and one mole of…

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Group 14 Elements

The following elements come under group 14 of the periodic table.