19. Compare the radii of Na* and Mg* and also of SO" and Cl". Explain the cause of variations.

Q: 7. Which two metals do magnets attract or repel? a. Gold and silver b. Platinum and titanium c. Iron…

A: Given statement is :  Which two metals do magnets attract or repel ?  Options are :  a. Gold and…

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

A:

Q: A sealed, evacuated tube containing KCl and a small amount of potassium was exposed to a Tesla coil…

A: Tesla coil is a radiofreequency oscillator to produce high voltages. The spark from the Tesla coil…

Q: Magnesia contains Mg?* and 02-. Which of these ions is larger? Explain.

A: Given that : Out of Mg2+ and O2- ion, we have to identify which one is larger.

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…

Q: now.com/ilrn/takeAssignment/takeCovalentActivity.do?locator=assignment-take [References] Cobalt-60…

A:

Q: 17. In separating pieces of metals from one another, use a magnet. * A. True O B. False 18. The…

A: Since you are posted with multiple questions. As per the rule, I am answering first question only.…

Q: Which element does the following electron configuration represent? 1s22s22p63s33p64s23d104p2

A: Counting total electrons equals to 32

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

A: ΔHfus. For Na = 2.60 kJ/mol Tm = 371 K ΔHvap. For Na = 89.6 kJ/mol Tb = 1033 K

Q: The experimental Bi¬I bond length in bismuth triiodide,BiI3, is 2.81 Å. Based on this value and data…

A: Given that, Bi-I bond length = 2.81 Ao Atomic radius of I = 1.39 Ao

Q: The following trace elements have been found to be crucial to the functions of the body. Indicate…

A: Given, a. iron             b. vanadiumc. calcium      d. arsenic

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

A: Given details, The mass of Na2SxO6 = 1.50 g Then, Na2SxO6 has two sodium ions.  Na2SxO6 having 6.68…

Q: Steel is an alloy containing Fe atoms and C atoms. Which of the following diagrams best represents…

A: Alloy is formed when two or more then two metal or one metal combined with one or two other elements…

Q: The shielding in NMR is: a.) Place a metal around the sample tube before placing it in the…

A: Nuclear  magnetic  Resonance is a physical phenomenon when nuclei are disrupted by a faint…

Q: What is the maximum number of electrons that can be accommodated in the shell with n = 4?     32…

A: The maximum number of electrons in the nth shell is ---- 2n2 Where, (n = 1, 2, 3, 4-----). Orbit…

Q: 3. The Statue of Liberty consists of copper plates on an iron skeleton. The statue was recently…

A:

Q: Place the following atoms in order of increasing atomic radii: K, Na, Be, and Li?           Be < K…

A:

Q: 65.) Write the Bimple Lawis etrusture tor euch of the follawing cctoms a. I(Z=58) b. Al (Z=13) C Xe…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: Which of the following elements is tetratomic in its standard state? O sulfur selenium carbon O…

A: The elements given are sulfur i.e. S, selenium i.e. Se, carbon i.e. C and phosphorus i.e. P.

Q: radius

A:

Q: Which sample has the largest volume  densitites are aluminum 2.7 g.cm-3 and copper 9.0g.cm-3 (A)…

A: Formula: Density= mass/volume Volume= mass/density Given data: density of aluminium=2.7 g/cm³ ,…

Q: Give 3 other applications of the Golden number found in Nature

A: Golden ratio, also known as the golden section, golden mean, or divine proportion, in mathematics,…

Q: I do not understand 1s22s22p63s23p64s1  Is there a sort of counting that has to be done on the…

A: The electronic configuration of any element is written based on the atomic number of the element…

Q: 3) which items listed below have a smaller radius than aluminum? B Cl Ga N S

A: The atomic radius of boron is smaller than aluminium being the first member of group 13 series.

Q: When two He atoms undergo fusion in a star, the resulting element is: A) H B) Li C) Be

A: In fusion reactions, two light atomic nuclei fuse together to form a heavier nucleus and release a…

Q: List the steps you would take to experimentally determine whether a gold ring is actually pure gold.…

A: Take the ring. Clean and dry it. Further, find the weight of the ring in grams by using precision…

Q: 22. How does the answer in question 21 explain the splitting pattern of H,? Does the splitting…

A: Given compound,

Q: In line with the material science behind lithium-ion battery, which of the following chemical…

A:

Q: Plz do Asap....!

A: For the given set of elements the highest energy level of the elements need to be listed, this can…

Q: - Electron Attraction Nucleus Repulsion HA

A: Valence Bond Theory- In terms of energy consideration if the number of attractions is more than…

Q: The average atomic masses of some elements may vary, depending upon the sources of their ores.…

A: Introduction: Percentage abundance: The percentage abundance of an element is defined as the ratio…

Q: Are Ni and Cu the same isotope or ion?

A: Nickel is a element with the symbol Ni and atomic number 28. Copper is a element with the symbol Cu…

Q: Consider the table. Metal Tm (K) AHFUS (kJ/mol) Tp (K) AHvap (kJ/mol) Li 454 2.99 1615 134.7 Na 371…

A: Given: For Cs: Melting point, Tm (K) = 302 K Boiling point, Tb (K) = 942 K Enthalpy of vaporization,…

Q: Li 1. then H,O* ? 2. DMP В D

A: Option-B is correct

Q: A) N, P, or As B) CI, Br, or I C) P or As // D) F, CI, Br, or I E) O, S, or Se 近

A: formal charge is the charge assigned to an atom in a molecule as you mean that electrons in all…

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: Q/Choose between parentheses 1-Element like ....... the nucleus has a weaker attraction to its…

A: Solution :          Electrons are negatively charged particles that are present in the orbit around…

Q: Why when atom loses electrons it becomes positively and not negatively charged? For the toolbar,…

A: The atom is a neutral due to the presence of same number of protons and electrons. As we know that…

Q: Consider the pollowing at oms: A BCOEF Number of electrons 888910 9 Number of n atrons 8910 9810 nch…

A: Isotopes are atoms of same element having same atomic number (number of protons ) but different mass…

Q: Which is the correct order of size (from smallest to largest) of K, K+, Ca, and Ca2+? a)Ca2+ < K+…

A: The correct order of size (from smallest to largest) of K, K+, Ca, and Ca2+ has to be arranged…

Q: Indicate what has lost electrons and what has gained electrons:   16Fe(s)+3S8(s)=8Fe2S3(s)

A:

Q: Diagonal relationship is not shown by which : a   C and P b    B and Si c     Be and Al  d      Li…

A:

Q: BOW manvOLneoiowing willlomanatetite somion lW

A: Acidic solutions tells about those have higher concentration of hydrogen ions than water. Among NH 4…

Q: 4. Which of these two metals will have a higher melting point? Explain your choice. Na and Al

A: Al has higher melting point than Na.  Metallic lattice of sodium is weak than Aluminium.

Q: The sum of IE1through IE₄ for Group 4A(14) elements shows a decrease from C to Si, a slight increase…

A: (a) On moving down the group, the size of the element increases due to the increase in the number of…

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: 6) (a) The solubility of carbon tetrachloride (CCI4) in water at 25°C is 1.2 g/L. The solubility of…

A: We will give explain both of the answer

Q: Cd (s). -> Cd2+(aq) + 2e- , how many number of electrons?

A: Reduction is the process of gain of electrons whereas oxidation is the process of loss of electrons.…

Q: Nanoparticle was synthesis from silver atoms with 1.8 nm of diameter. Find the ratio of the surface…

A: The diameter of silver atoms=1.8 nm The radius of silver atoms=1.8/2=0.9 nm Surface…