10. Which of the following does not match the others? 168 (A) 67.2 3.88 1000 100 10 All, (M)/mol) (B) 1s 2s 2p (C) (D) ofelectron S + M N -

Q: Question 3 An element has the following electron configuration: [Ne] 3s² 3p³. How many core and…

A:

Q: Which element in each of the following sets would you expect to have the highest IE2? (a) Na, Mg, Al…

A: The elements in a  set with  highest second ionization energy has to be selected.

Q: A neutral atom of an element has two electrons with n=1,eight electrons with n=2,eight electrons…

A: Total electrons present in the neutral atom: n=1 has 2 electrons ⇒1s2n=2 has 8 electrons ⇒ 2s2,…

Q: List the outer electron configuration for each column in the periodic table.(a) 3A (b) 4A (c) 6A (d)…

A: (a) 3A : The outer electron configuration = ns2 np1  (b) 4A : The outer electron configuration = ns2…

Q: ö: j y- :0 :0 :0= :o:

A:

Q: For two gas particles with the same velocity, which would have a larger (longer) de Broglie…

A: Given,  Argon and xenon, which one have longer de - broglie wavelength at same velocity.

Q: Identify the correct ranking of effective nuclear charge between N,O, and C? Why is that?

A: The effective nuclear charge is the net positive charge experienced by an electron in a…

Q: 55. Which elements are main-group elements?(a) Te(b) K(c) V(d) Re(e) Ag

A: The main- group elements are the elements in the s-block and p-block of the modern periodic table…

Q: 90 91 92 93 94 95 96 97 98 99 100 101 *Actinides Th Pa Np Pu Cm Bk Es Fm Md 232.0 (231) 238.0 (237)…

A: a. The third element is group 4A is germanium. b. Element number 114 is Flerovium. c. An element…

Q: I don't understand. It must be in a +3 state? Why? F has a -1 charge, that means it would have: 9p…

A: Answer: Metal M should be chosen from the ones given in option.

Q: The electron in the hydrogen atom (in its ground state) orbits the nucleus at a distance of 0.5292…

A:

Q: Explain the similarities and differences as compared to element 118 Og if a new element was…

A: A question based on periodic trends that is to be accomplished.

Q: Which of the following atom does belong to lanthanide group? Group of answer choices A.) U: Z = 92…

A: Given :-  A.) U: Z = 92 B.) Hg: Z = 80 C.) Ce: Z = 58 D.) Cs: Z = 55    To identify :- a…

Q: 13). Which of the following underlined alpha hydrogen is the most acidic? (A) C H (B) i H (C) HICIH…

A:

Q: Naturally occurring boron is composed of two isotopes. The percent abundance and the mass of each…

A: 6 (B) ANS: Atomic mass=   % abundant x atomic mass +% abundant x atomic mass /100 Atomic mass=  19.9…

Q: What quantity of energy in J will remove the outer electron in a 1.00 mg sample of sodium?  IE1 (Na)…

A: Ionization energy is the minimum amount of energy required to remove the most loosely bound electron…

Q: Write the full electron configuration of the elements with the following atomic numbers. (a) Z = 9:…

A: Electron configuration:  The complete description of the atomic orbitals occupied by all the…

Q: Does any element with Z ≤ 92 match the description? An element in the nitrogen family with a higher…

A: The question is asking if there is an element in the nitrogen family (Group 15 of the periodic…

Q: Naturally occurring magnesium has the following isotopicabundances: Isotope Abundance (%)…

A:

Q: a ) Eva l u a te t h e expre s s i o n s 2 x 1, 2 x (1 + 3),2 x(1 + 3 + 5), and 2 x (1 + 3 + 5 + 7).…

A: In the expression, the total number of valence electron is calculated in which 2 is the number of…

Q: What species is represented by the following information? p = 17 n = 18 e = 18

A: The answer to the following question is-

Q: Which of the following ions has the smallest size? (a) Cl- (b) F- (c) Al3+ (d) Na+

A: Since,As we move from left to right in a period then size decreases .But when we move from top to…

Q: Determine the missing physical properties for eka-A. Element •Element A melting point (°C) N/A…

A: Eka-A is eka-aluminium which is replaced by Gallium.

Q: Give the symbol for the element with n = 6, l = 1, ml = -1, ms = +1/2.  Lead, Bismuth, Astatine or…

A: Principal quantum number, azimuthal quantum number, magnetic quantum number and spin quantum number…

Q: Which atom in the list has the smallest atomic radius? (A) Se (B) Kr (C) Ca (D) Rb (E) In

A: Which of them having smallest size ?

Q: Arrange each set in order of decreasingatomic size:(a) Ge, Pb, Sn(b) Sn, Te, Sr(c) F, Ne, Na(d) Be,…

A: Atomic sizes increases down the group and decreases along the period.

Q: 28. (a) In Figure P7.7, which sphere could represent a Na atom, Nation, and K atom? Provide an…

A: In P 7.7 = (a) represent Na , (c) represent Na+ and (b) represent K. As we decrease the no of…

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.