(a) Among the nonmetallic elements, the change in atomic radius in moving one place left or right in a row is smaller than the change in moving one row up or down. Explain these observations. (b) Arrange the following atoms in order of increasing atomic radius: Si, Al, Ge, Ga.

Q: Why are the ionization energies of the alkali metals in the order Li >, Na > K > Rb?

A: ANSWER IS DISCUSSED BELOW :

Q: Which element would have the greater electron affinity, S or O? Explain using the concepts of…

A: S (Sulphur) Atomic number = 16                   Electronic configuaration = 1s2 2s2 2p6 3s2 3p4   O…

Q: Describe and account for the variation of first ionizationenergies along Period 2 of the periodic…

A: Describe and account for the variation of first ionization energies along with Period 2 of the…

Q: Which of these has the largest first ionization energy: B, Al, C, Si?

A: An atom is composed of three main sub-atomic particles; electrons, neutrons and protons. The atomic…

Q: Explain why the s-block of the periodic table is twogroupswide, the p-block is six-groups wide, and…

A: The reason why s-block of periodic table is two groups wide, p-block is six-groups wide and d-block…

Q: A. A main group element with the valence electron configuration 3s23p1 is in periodic group…

A: A) A main group element with the valence electron configuration 3s23p1 is in periodic group metallic…

Q: What are the properties of the element flerovium (the period 7 element in group 14)?

A: Flerovium Flerovium is an atomic number 114 chemical element with the symbol Fl. Flerovium, which is…

Q: Describe and account for the variation of fi rstionization energies along Period 2 of the periodic…

A: The first ionization energy is the minimum amount of energy that is required to remove an outermost…

Q: 7.119 The first four ionization energies of an element areapproximately 738, 1450, 7.7 × 103 , and…

A: The first four ionization energies of an element are approximately 738, 1450, 7.7 × 103, and 1.1 ×…

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: Discuss the relationship between the location of a manyelectron atom in the period ic table and its…

A: Interpretation: The relationship between the location of many atoms in the periodic table and its…

Q: Arrange the following elements in order of decreasing atomic radius: Cs, Sb, S, TI, and Se. Bank…

A: Given that a question   five elements Cs ,Sb, S, Tl and Se Difine a following elements in order of…

Q: A. A main group element with the valence electron configuration 2s 2p is in periodic group It forms…

A: The octet rule: According to the octet rule, the atoms form molecules by losing, gaining, or sharing…

Q: The ionisation energy generally increases across a period. However, there are two exceptions to the…

A: Period 3 sees an uptick in ionization energy as the nuclear charge rises, but the shielding of the…

Q: Moseley established the concept of atomic number by studyingX rays emitted by the elements. The X…

A: a.

Q: Write the ground-state electron configurations of the d-metals from yttrium to cadmium.

A: To find: Ground state configuration of yttrium to cadmium

Q: What element has the electron configuration: [Xe] 6s2 ? A) Xe B) Cs C) Te D) Ba

A: Given, noble gas electronic configuration as [Xe] 6s2.

Q: A. A main group element with the valence electron configuration 4s' is in periodic group It forms a…

A:

Q: An atom with a stronger electron affinity is often more reactive. Given a pressurized chamber…

A: The question is based on the concept of periodic properties of elements. we need to identify which…

Q: A. A main group element with the valence electron configuration 3s23p3 is in periodic group .It…

A: a monatomic ion with a charge of:

Q: it is clear that the first ionization energy of He is very large.  Would you expect the first…

A: We have  helium and H-( Hydride ion) H- has lower first ionisation energy than He.

Q: The ionisation energy generally increases across a period. However, there are two exceptions to the…

A: The ionisation energy increases across a period because effective nuclear charge is increasing so…

Q: Question attached

A: Given,

Q: Which of the halogen elements has the highest density in its standard state? B) Which of the…

A:

Q: Silver and rubidium both form +1 ions, but silver is far lessreactive. Suggest an explanation,…

A: Ground state of an atom is that in which all electrons are in lowest possible level. It is that…

Q: Of the following, which Atom has the largest atomic radius? Zn F I Rb

A: The given elements, Zn belongs to 4th period, F belongs to 2nd period, I and Rb belong to 5th…

Q: Which of these elements (Na, Mg, Al, Si,P ) will display an unusually large jump in ionization…

A:

Q: Which atom as the largest atomic radius? O a. Cs O b. Li О с. F O d. Zn О е. Mg

A: Atomic radius is the distance in an atom from nucleus to its outermost orbital. We have to find out…

Q: With specific reference to the Calcium atom, describe what is meant by the term 'shielding effect'.

A: Shielding effect: Shielding effect is defined as the decrease in attraction between an electron and…

Q: Which neutron atom or ion has the smallest radius K+ , Ca2+ , Se2-

A: Given ions,      Potassium(1+)  ion, Calcium(2+) ion and Selenium(2-) ion.

Q: If the radius of atom X is greater than the radius of atom Y, then it is also likely that

A: Given that the radius of the atom X is greater than the atom Y

Q: (1) What is the element with an electron configuration of 1s²2s²2p°3s'3p°4s°3«®? (2) What is the…

A:

Q: A. A main element with the valence electron configuration 5s- is in periodic group group It forms a…

A: When an atom excepts electrons, it acquires a negative charge whereas when an atom loses electrons…

Q: An element has the following electron configuration, [Ar]3d104s²4p3. This element is a _-- O…

A: To solve this problem first we add the electrons present in each orbital to get total number of…

Q: What causes the changes in ionisation energy across period 2  elements?

A: Ionisation energy is the energy required to remove an electron from the outermost shell of an atom.…

Q: The first element of every group behaves differently from the other elements in the same group.…

A: Lithium shows anomalous behavior because it has the smallest size in the group. Since it has the…

Q: State the Aufbau principle, and explain the role it plays in classifying the elements in the…

A:

Q: An atom of which of the following elements has the largest atomic radius? Ca or Sr or Mg or Ba or…

A:

Q: The ionization energies for removing successive electrons from sodium are 496 kJ/mol,

A:

Q: What is the characteristic valence electron configuration of the group 7A elements, the halogens?

A: The halogens elements contain valence electrons of seven; two in s-orbital and seven in p-orbital.

Q: The ionisation energy generally increases across a period. However, there are two exceptions to the…

A: This question is based upon the concept of ionization energy. First step is to explain about…

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.