For many elements on the periodic table EA 1 has a positive value and EA 2 has a negative value. Define EA, and explain why this trend occurs.

Q: Which is a halogen?

A: The element  belonging to group 17 in the periodic table are called  as halogens.   They are…

Q: Which element in the 2nd period would have the largest difference in energy between its 4th and 5th…

A: we have to select the element for which difference in 4th and 5th ionization energy is very large

Q: 9.- Select the chemical process that represents the second ionization of silver. a) Ag(s) → Ag²(g) +…

A: We have to write the chemical process that represents the second ionization of silver.

Q: Physical description: This substance is a colorless solid that is not terribly soluble in water…

A: An unknown substance present can be identified using chemical analysis as well as spectroscopic…

Q: Match the regions of the periodic table with their names. A K N В

A: All the answers have been correctly matched below.

Q: What associated anion do Ag+, Fe3+, Cu2+, Ba2+, Pb2+, and Na+ have? And what is the formula of this…

A: Given: some ions are given  To find: Anion associated with it Solution: Ions are formed by loosing…

Q: The ionization enthalpies of group 15 elements are higher than that of group 14 and 16 elements in…

A:

Q: Choose the element in each pair that has the higher first ionization energy. Br or Bi…

A:

Q: Q14. Which equation correctly represents the first ionization of copper? A. Cu(g) → Cu* (g) + 1e B.…

A: Ionisation energy can be defined as the amount of energy required to remove an electron from…

Q: What are the three types of oxides? Using chemical equations and any other information to support…

A: Three types of oxides: 1. Acidic oxide 2. Basic oxide 3. Amphoteric oxide

Q: Based on the properties from this chapter and their positions in the periodic tables, provide one…

A:

Q: Some properties of element Y are listed. It reacts with hydrochloric acid to make hydrogen gas. It…

A: 1. Mg +2HCl  → MgCl2  + H2 2. Mg  + H2O → MgO + H2 Magnesium burns in steam to produce white…

Q: Rank the following elements in order of decreasing metallic character (from most metallic to least…

A: The metallic character increases down the group and decreases along the period in periodic table.

Q: Which of the following set of elements contain only type II metals? O Na, Ca, Mg O Mn, Cd, Co O Ni,…

A:

Q: In some periodic tables, H is placed in Group 1A (1). In other periodic tables, H is also placed in…

A: In some periodic tables, H is placed in Group 1A (1). In other periodic tables, H is also placed in…

Q: Illustrate the orbital diagram and identify the magnetic property (paramagnetic or diamagnetic) of…

A: Paramagnetic: Atoms with unpaired electrons are called paramagnetic. Diamagnetic: Atom with paired…

Q: Looking up one snowy afternoon from a book titled The Moral Case Against Turning Lead Into Gold (Or…

A:

Q: The element neon (Ne) has a valence-level electron configuration of s p°. Which other elements have…

A: We have to predict other element having similar configuration to Ne.

Q: Arrange these elements from largest atomic radius to smallest atomic radius: Rb Li K Cs Na

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

Q: Does any element with Z ≤ 92 match the description? An element in period 6 and group 6A

A: The question is asking if there is an element with atomic number (Z) less than or equal to 92, that…

Q: Consider the elements in Column 15 in the periodic table, with nitrogen at the top (2nd period) and…

A: The elements of group 15 generally dissolve and do not react with water. However there are some…

Q: Arrange the elements Ca, P, and O in order of increasing atomic radius. O Ca<O<P O Ca<P<O O<P<Ca O…

A: Ca atom have more number of shells than other P and O so that Ca is bigger than P and O  So, that Ca…

Q: Mg is a member of which family? Onoble gases halogens O alkaline earth metals alkali metals none of…

A: Given:MgDetermine the family of Mg.Atom is the basic unit of matter and has a nucleus composed of…

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: Place the following elements in order of increasing first ionization energies: Si, P, S From lowest…

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

Q: What element in period 3 is a metalloid?   Give this element’s ground state noble gas orbital…

A:

Q: 14. The second ionization energies for the elements from Sulfur (16) to Titanium (22) are listed in…

A: The systematic arrangement of elements based on their atomic number in the horizontal periods and…

Q: onsider two different elements, element 1 and element 2. Element 1 has a larger radius, but a…

A: Atomic radius is the shortest distance between the nuclei of the atom to the outermost  shell of…

Q: Suppose you were trying to find a substitute for Na+ for some application. Where would you begin…

A: The sodium ion has 1+ charge in the nerve signal transmission. The ions having 1+ charge and size…

Q: Compare Na, Mg, O and P. Which has largest atomic radius? Which has the highest ionization energy?…

A:

Q: Does any element with Z ≤ 92 match the description? An element in period 6 and group 6A.

A: The question is asking if there is an element with an atomic number (Z) less than or equal to 92…