which one of the following ions is isoelectronic with krypton? (a) Ca^2+  (b) K^+   (c) I^-  (d)Mg^2+   (e)Sr^2+

Q: which is the Period 2 element with-the Smallest atomic radius ? A.) Li D.) Ne C.) Be D.) Ra

A: Li, Be and Ne belong to the second period of the periodic table. Whereas, Ra belongs to the 7th…

Q: Question 2 Which of the following is correct for the 15t ionization energies of S, Se, F S>P> Se

A: Ionization energy or Ionization potential : The amount of energy required to remove one electron…

Q: Paragraph 5 Identify the atom or ion corresponding to each of the following descriptions: I)…

A:

Q: Sort each of the following elements by effective nuclear charge, Zeff , from smallest to largest:…

A: In an atom, the proton and electrons are situated in the nucleus. The positively charged nucleus…

Q: magnesium aluminum sulfur silicon

A: To solve this question,  it is very important to write electronic configuration of all the species…

Q: Which statements completed with a to e will be true and whichwill be false?In Group 4A (14), an atom…

A: The answer is option b. , which is ionization energy. Because, Ionization energy(I.E.) is the energy…

Q: Given the valence electron orbital level diagram and the de- scription, identify the element or ion.…

A:

Q: QUESTION 15 Which of the following is diamagnetic? 13AI 15P 24Cr 48Cd 83Bİ QUESTION 16 Which ion has…

A:

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

A: ANSWER IS DISCUSSED BELOW :

Q: 7.21 Specify the group of the periodic table in which each of the following elements is found: (a)…

A: Electrons are filled in this order The outer electron configuration of the elements in group 1A is…

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: 7.85 Arrange the following isoelectronic species in order ofincreasing ionization energy: O2−, F−,…

A: Arrange the following isoelectronic species in order of increasing ionization energy: O2−, F−, Na+,…

Q: Arrange each of the following lists of elements in order ofincreasing ionization energy:a. Cl, Br, I…

A: Ionization energy is defined as the amount of energy required to remove an electron from the valence…

Q: Predict the ionization energy of Li2+ given that the ionization energy of He+ is 54.36 eV.

A: The ionization energy He+ is 54.36 eV The electronic configuration of Li2+ is 1s1 The electronic…

Q: ionization energy.

A: Ionisation energy is defined as an energy which is required to remove an electron(e-) from an…

Q: If rubidium has an emission line at 1.28 X 106 m and ng is 3, what is the initial energy level? 6.…

A:

Q: 10. Which one of the following species is not isoelectronic E. 0²- A.Mg2+ B. SI²* with neon? C. Na*…

A: Species which have the same number of electrons are called isoelectronic species.

Q: Which one of the following atoms has the largest effective nuclear charge, Zeff? A. C B. N C. O…

A: Given that

Q: 8. Explain why is the first ionization energy for Ne > Ar 9. Explain why the electron affinity for…

A: Ionization energy is defined as the amount of energy required to remove the electron from the outer…

Q: Find the electron configuration of the element with z=33. And say which group and period it is in…

A: To find: The electron configuration of the element with z=33. And say which group and period it is…

Q: Are nonmetals to the left or right of the metalloids?

A: The metals are left to the line (except of Hydrogen which is a non metal),non metal is right to the…

Q: 7.8 What is a main group element? Give names and symbols of four main group elements.

A: In the modern periodic table, the elements have been arranged according to their atomic numbers. The…

Q: Is strontium a type1 or type2 metal?

A: Firstly understand what is TYPE-1 and TYPE-2 metals:- •TYPE-1 METALS:-Metals whose ions(cations) can…

Q: 3) Which of the following is isoelectronic with Mg? Ar, K*, S² or Ne s2-

A: The ions or atoms which possess the identical electron configuration are termed as isoelectronic…

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

A:

Q: Antimony belongs to Group SA. What is its correct a. b. Sb-

A: Antimony belongs to Group 5A. The correct electron-dot structure is                       Option d.…

Q: Place the following in order of increasing size: Ge, As, Sn, In.

A:

Q: 3. Ва, Br, Be, в, Bі A. Decreasing ionization energy

A: 3. Decreasing ionization energy : Br > Be > B > Bi > Ba First ionization energy of Be =…

Q: Consider the element with the electron configuration [Kr]5s 4d. This element is Select one: a. an…

A: Given electronic configuration of element is [kr] 5s24d7   So, It has 36 +2+7   = 45 electrons

Q: smallest atomic radius

A:

Q: Explain the relationship of the first ionization energy of an element and its atomic number.

A: Ionization energy is the energy required to extract an electron from the valence shell and atomic…

Q: Which of the following statements is TRUE? Select one: The first ionization energy of Mg is greater…

A: False. Because across the period, size decreases and nuclear attraction increases. More energy is…

Q: QUESTION 15 Which of the following is diamagnetic? O 13AI 15P 24Cr 48Cd 83Bİ QUESTION 16 Which ion…

A:

Q: Of the following, twhich gives the correct order for atomic radius for Ca, Ca > K > As > Ge > Kr Kr…

A: Atomic radii decreases across a period and increases down a group.

Q: QUESTION 15 Which of the following is diamagnetic? O 13AI O 15P O 24Cr O 48Cd O 83Bİ QUESTION 16…

A:

Q: A researcher is studying the ionization energies of a certain element. She finds that the ionization…

A: Ionisation energy is defined as amount of energy required to remove the most loosely bound…

Q: Put the following atoms and ions in order of increasing ionic radius: F, S, Cl, and Se

A: Ionic radius increases when we move top to bottom down the group ,but  it decreases on moving from…

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: Explain the variation in the ionization energies of carbon, asdisplayed in this graph:

A: The atomic number of carbon is 6. Therefore, the electronic configuration of carbon is,

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

A:

Q: (1) What is the name of the element with a valence electron configuration of 3s-3p*? (2) What is the…

A: Since the period number of the element is given by the valence shell number  and group number of the…

Q: An element which has a shiny lustre, is bendable, and is a good conductor of heat and electricity…

A: An element which has a shiny lustre, is bendable, and is a good conductor of heat and electricity…

Q: Of the following, which atom has the smallest atomic radius? Te Sr Po Ba

A: The atom having smallest atomic size will have small atomic radius. Given atoms , Te, Sr, Po, Ba

Q: QUESTION 15 Which of the following is diamagnetic? O 13AI 15P 24Cr 48C. 83BI QUESTION 16 Which ion…

A:

Q: Which of the following statements is incorrect for Gallium? A. It has 3 valence electrons.  B. The…

A:

Q: Which element in each of the following sets would you ex-pect to have the lowest IE₃?(a) Na, Mg,…

A: Ionization energy is the quantity of energy that an isolated, gaseous atom in the ground electronic…

Q: 3.Why is the ionization energy of Ca higher than that of K but lower than that of Mg?

A: As we move down the group in the periodic table atomic size is increased hence ionization enthalpy…

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.