The less electropositive element is: A. Na B. Be C. Li D. Mg

Q: 48. What kind of reaction is this: Mg(s) + 2HI(aq) forms Mg12(s) + H2(g) A) single replacement B)…

A:

Q: MCQ 40: The color of lodine (1) is A. grey B. black (s) C. purple (vapors) D. all of above

A: Iodine is element in the periodic table having elemental symbol I and atomic number 53 and belongs…

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Q: Part A perchlorate Express your answer as an ion.

A:

Q: 25. . which of the I ) I only

A: Introduction :  We have to tell which of the following are resonating structures .

Q: A 1.50-g sample of Na2SxO6 contains 6.68 x1021 sodium ions. Determine the value of x.

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Q: Use the References to accesS I Many chemistry problems result in equations of the form 2.38 x 10 2…

A: Type of equation in chemistry is given. Values for the unknown x = ?

Q: Two electrons are removed from a Li sheet. How many Li ions were formed?

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Q: will be closest to which value? (A) 35 (B) 36 (C) 37 (D) 38

A: Isotopes are defined as same atoms having same atomic number but different mass number.

Q: Part A Using Slater's rules, calculate Zeff for S. Express your answer using three significant…

A: In this question, we will calculate the Effective Nuclear charge ( Zeff ) for S and Cl atom.  You…

Q: Nonmetals typically ______ and metals typically ______.   A. donate  neutrons; accept…

A: Non-metals typically ______ and metals typically ______. A.donate  neutrons; accept neutrons…

Q: Each metal unknown distributed is different size. Explain why each group should get the same answer…

A: Density is the characteristic property of a substance. It depends on the relationship of mass and…

Q: the Figure below.

A:

Q: Numbers 7,8 and 9 only thank you

A: Given following Reactions -    (7) Fe2O3  + CO -----> Fe + CO2  (8) CO + I2O5 ----> CO2 + I2…

Q: hich element es each

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A: Based on PBS program fabric of the cosmos : Quantum leap, quantum mechanics provides the foundation…

Q: I с со I [References] VII Available Electrons: 16

A: Here we have to follow the basuc rule of Lewis dot structure and proceed according to that .

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Q: 10 8 7 6. 4 3 2 1 1.1ppm d, 6H 3.6ppm septet, 1H M/z 102

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Q: A- Determine the mass of nucleons and electron by atomic mass unit?

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Q: At 200 ° C the liquid elements are: A) Zinc and lead B) Tin and gallium C) Only gallium D) Only zinc

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Q: what is m and n

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Q: Consider the table. Metal Tm (K) ΔHfus (kJ/mol) Tb (K) ΔHvap (kJ/mol) LiLi 454 2.99 1615 134.7…

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Q: relatively large compared to their size

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Q: 40 Li ions were formed. How many electrons were removed?

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Q: Use the Ref Match the orbital drawing on the left to the type on the right. Clear All Submit Answer…

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Q: - Sulfur - Nitrogen - Fosfor - Arsenic - Cr - Cu - Uranium - Zinc - Hg by exclude from the elements…

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Q: mass number for the hafnium isotope with 106 neutrons Express your answer as an integer.

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Q: MCQ 25: 1.67*10-27kg is the weight of a single atom of A. oxygen B. nitrogen C. hydrogen D. water

A: 1.67 x 10-27 Kg is the mass of a proton which is equal to 1.00784 amu.

Q: g Use the average atomic masses to calcalate He aumbarof omoles of He elemen't pesscnt in leveh…

A: Moles = weight / atomic weight   And you have done mistake in c part also . Please correct.

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Q: A metallic oxide is 40.06% oxygen. The metal has a 4+ charge. What is the metal?

A:

Q: Explain the relationship between an atoms number of electrons it’s relative stability

A: An atom contain negatively charged electrons and positively charged nucleus.

Q: What is m and n

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