Nitrogen has a greater first ionization energy than phosphorus. What is the best evidence to support this observation? (A) Nitrogen has a greater effective nuclear charge. (B) A nitrogen atom is larger than a phosphorus atom. (C) The electron ionized from nitrogen is in a lower energy level closer to the nucleus. (D) The electron ionized from nitrogen is not from a valence energy level.

Q: Compare the following two elements, identified by their electron configurations: A- [He]2s 22p 5 B-…

A: Electrons are filled in a different atomic orbital in an atom. According to the Aufbau rule, the…

Q: What are the elements under Group 4A? Tabulate your answer by giving its description, importance,…

A: Group 4A contains the elements  of carbon family having C , Si , Ge , Sn , Pb .

Q: Explain why atomic radius decreases as we move to the right across a period for main-group elements…

A: In the main-group elements, the atomic radius decreases on moving from left to right across a period…

Q: Which has a lower ionization energy, an atom of selenium or an atom of tellurium?

A: Ionization energy: Energy required for an isolated gaseous atom to lose one electron to form…

Q: 6 The elements of the Periodic Table are created by a variety of processes discussed in the…

A: New atomic nuclei create from pre existing nucleons.The first nuclei form after bing bang through…

Q: why would certain Adams more strongly hold onto their electrons? Describe the exceptions and why…

A: There are attractive forces present between the nucleus and the electrons present in the shell.…

Q: Using Slater's rules as evidence, explain why chromium deviates from the Aufbau Principle

A: Atomic number of Chromium is 24. So chromium will have 24 electrons. So the electronic cofiguration…

Q: Provide an explanation for each of the following phenomena. Begin by stating the expected…

A: When we move down the group, generally the size increases due to addition of one shell like in case…

Q: Write the symbol of the element in the fourth period of the periodic table with: 5 valence electrons…

A: Valence electrons - Total electrons present in outermost shell of an atom

Q: Explain why the ionization energy for hydrogen is much higher than that of other Group IA/1…

A: Ionization energy is the extent of energy which is essential to move the loosely bound electron…

Q: Why does flourine have a smaller atomic radius than magnesium?

A: Magnesium belongs to 2nd group and 3rd period .The element fluorine  belongs to 17 th group and 2nd…

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: A. A main group element with the valence electron configuration 5s²5p4 is in periodic group It forms…

A: The given elements can donate or accept electrons to complete the octet. The number of electrons…

Q: List the the main-group elements?

A: The periodic table is defined as the representation of the elements classified into 18 groups and 7…

Q: The first member of a group in the Periodic Table of elements always shows some abnormal chemical…

A: Group is a column in a periodic table and in the first element in the column is the first member of…

Q: Rank the following elements in order of decreasing(a) atomic size: N, Si, P(b) IE₁: Kr, K, Ar(c) EN:…

A: a) The atomic size gets increases on moving down the group and gets decreases on moving left to…

Q: Which one of the following ions has the largest radius? O CI Okt O s²- O Nat 02- W

A:

Q: how does effective nuclear charge helps us rationalize the trends of atomic radius and ionization…

A: As we move down the group a shell of electron is added to an and size of the atom increases due to…

Q: Using Slater's Rules, calculate Zef for the outermost s electron of vanadium, V(0). Explain. Using…

A:

Q: why doea a transition series contain 10 elements?

A:

Q: (1) The element with an electron configuration of 1s22s22p63s23p64s23d3 is in group (2) The element…

A: Given are electronic configurations.In the electronic configuration, the principal quantum number…

Q: The electron distribution of the -1 charged ion of the Cl atom is similar to that of which atom? O…

A: Given: Which atom will have similar electron distribution as that of the Cl atom with -1 charge.

Q: Explain why potassium and sodium exhibit similarproperties.

A: It is so because both of these elements have similar valence shell electron i.e. ONE.

Q: b Select all of the atoms which bear lone electron pairs. . . Gray = C; white = H; red = 0; blue =…

A: Molecular structure shows the bonding between of atomic of a compound.

Q: Which atom has the same electron configuration with the -3 charged ion of the P atom? O A) S O B) Ar…

A: The given atom is Phosphorous To find: The atom which has the same electronic configuration of  -3…

Q: Which of the following atoms has the smallest atomic radius? O a) p Ob) As OC) N d) Bi e) Sb

A: These types of questions are done according to the periodic trends of elements in a periodic table.

Q: Explain the contributions of Döbereiner and Newlands to the organization of elements according to…

A:

Q: By using Slaters rules, calculate the effective nuclear charge of the 22nd electron in bromine

A: Given element: Bromine

Q: unabbreviated electron configuration

A:

Q: Answer ALL parts of this question. (a) Explain the following observations in first ionisation…

A: Ionization energy (EI): When an electron is removed from the outermost shell of an isolated gaseous…

Q: What are inner transition elements and main transition elements?

A:

Q: The electron affinity of sodium is lower than that of lithium, while the electron affinity of…

A: The tendency to accept an electron in the gaseous state to form an anion in the gaseous state is…

Q: Name the anomalous properties of lithium.

A: Anomalous properties of lithium are : Lithium is least reactive but strongest reducing agent among…

Q: 21. Order the following atoms in increasing first ionization energy: Cr, O, P, Rb

A:

Q: 4/ ________ is isoelectronic with scandium. Sr2+ Mn5+ Mn4+ Mn4- Mn

A: ANS. MN+4

Q: 12. As the value of each of the following atomic properties increases, which property increases the…

A: Metallic character is the property of elements in which they loose an electron from their outer…

Q: In general, as you go across a period in the periodic table from left to right: (1) the atomic…

A: Atomic radius decreases on moving left to right in the period or row in the periodic table. The…

Q: For main group elements, how does the number of core electrons vary across a period?

A: Period table contains 7 Period and 18 groups.  From left to right across the periodic table is known…

Q: Rank the following in order of increasing first ionization energy; Be, B, C, N, O. Explain your…

A: Ionisation energy is the minimum amount of energy requires to remove an electron from it's valance…

Q: Which element would you expect to be more metallic?(a) S or Cl(b) In or Al(c) As or Br

A: Metallic character represents the tendency of element to behave as metal. It increases in a group…

Atomic Structure

The basic structure of an atom is defined as the component-level of atomic structure of an atom. Precisely speaking an atom consists of three major subatomic particles which are protons, neutrons, and electrons. Many theories have been stated for explaining the structure of an atom.

Shape of the D Orbital

Shapes of orbitals are an approximate representation of boundaries in space for finding electrons occupied in that respective orbital. D orbitals are known to have a clover leaf shape or dumbbell inside where electrons can be found.