The element in which the 5th energy is first completely filled is not yet known. True False

Q: Who proposed the wave/particle duality of matter? There are how many o bonds and how many bonds in…

A: Down the group atomic size increases as down the group increases the principal quantum number so…

Q: K (s) + Br₂ Br₂ (8) K (s) + Li (s) ca (s) F2 (g) → N₂ (8) + N₂ + Cl₂ (8) Na + 02 (9) (s) Al (s) +…

A: By using periodic table concept we can complete the reaction as follows

Q: All metals and noble gases exist in the monatomic form (simply as atoms). *     True False

A: The bonding in main-group elements can be explained on the basis of the octet rule. The electronic…

Q: Of the following, which element has the highest first ionization energy? O A) neon B) argon C)…

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

Q: Which element has the fewest electrons in its valence shell? Cs O Br Mg P

A:

Q: Effective nuclear charge of: 3p electrons in chromium 3s electrons in cobalt 2s electrons in…

A: Zeff can be calculated by slaters Rule in any element .          Formula for Zeff   = atomic Number…

Q: Re-order each list in the table below, if necessary, so that the atoms or ions in it are listed in…

A: Size of anion is always greater than its own neutral atom.

Q: You have made up a new non-metal element, Lolium, and produced a gaseous compound from it with a…

A:

Q: 3) which items listed below have a smaller radius than aluminum? B Cl Ga N S

A: The atomic radius of boron is smaller than aluminium being the first member of group 13 series.

Q: Using only the periodic table arrange the following elements in order of increasing ionization…

A: We know that ionization energy is the minimum amount energy that required to remove the most loosely…

Q: Write the symbol for element and classify it as a metal, nonmetal, or metalloid.argon

A: The periodic table is the regular arrangement of elements in order of increasing atomic number. It…

Q: What is the formula for this oxide? Red = Oxygen Gray = Uranium

A: Given:Red = Oxygen Gray = Uranium identify the formula for this oxideAn oxide is a chemical compound…

Q: Use the data given below to construct a Born-Haber cycle to determine the second ionization energy…

A:

Q: Classify each element. Note that another term for main group is representative, another term for…

A: the element is classified into different categories according to their behaviour is:

Q: Which of the following ions has the largest radius?      Br-     S2-     B3+     Mg2+…

A: Which ion has largest radius ? Answer of this question is given below with explanation.

Q: Which of the elements listed below has a lower ionization energy Strontium Silicon

A: Solution Ionization energies square measure continually positive numbers, as a result of energy…

Q: 8) A chemistry student reacts a black metallic element with an element that exists as a bright blue…

A: Hey, since there are multiple questions posted, we will answer one question. If you want answer for…

Q: (b) A new element, "X", is discovered and found to have 2 electrons in its outer level. Is X a metal…

A: Given that - New discovered element , with symbol of "X" has 2 electrons in it's outermost Valence…

Q: Be sure you can predict ion formation from the previous module. (In other words--what is the charge…

A: Elements lose or gain electrons as per their requirement to achieve noble gas configuration.

Q: Most of the elements in the periodic table are O metals O non-metals O metalloids gases

A: Metalloids - Elements which have properties intermediate of metals and non-metals.  Metals - They…