(d) The element from the first 10 elements that would be most similar in properties to the element of atomic number 115 (presently unknown). (e) The third row element having 4 valence electrons. (f) The element in the second period having the most negative electron affinity.

Q: Given the following information about two elements X and Y of the same group. Element Atomic…

A:

Q: 31. Arrange each set of the following elements in order of increasing first ionization energy (IE₁),…

A: Ionisation energy or some time called as ionisation potential is the amount of energy that must be…

Q: Using only the periodic table, rank the elements in each set in order of decreasing size: (a) As,…

A: Size increases down the group and decreases along a period.

Q: Choose the element with the higher ionization energy from each pair.(a) Al or In (b) Cl or Sb (c) K…

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Q: A neutral atom of an element has two electrons with n=1,eight electrons with n=2,eight electrons…

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Q: 4.32 (a) Calculate the enthalpy of formation of the hypothetical compound KF, assuming a CaF,…

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Q: The graph at the right shows the atomic radius for the19 elements in the periodic table.(a) Describe…

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Q: 3-(a) Write out the full electron configuration of Calcium (Ca). (b) How many electrons are in the…

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Q: Draw the energy-level diagram for the atom of each of the following elements: (a) boron (b)…

A: The energy-level diagram for the atom of each of the following elements has to be drawn.

Q: Arrange in order of increasing ionization energy. (Use the appropriate symbol to separate…

A: The ionization energy is the energy required to remove an electron from an atom or ion in the…

Q: Using only a periodic table, rank the elements in each set by increasing ionization energy.  Explain…

A: This question belong to classification of elements and periodicity. Ionization Energy: Amount of…

Q: 9. Draw the energy-level diagram for the atom of each of the following elements: a (a) boron (b)…

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Q: I don't understand. It must be in a +3 state? Why? F has a -1 charge, that means it would have: 9p…

A: Answer: Metal M should be chosen from the ones given in option.

Q: 2. The elements vary from metals through metalloids to nonmetals. They form halides in oxidation…

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Q: 2.) What is the number of free electrons per copper atom? Assume a density of 8.9 g/cm3 and an…

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Q: 1. Atomic radius and ionization energy are two important properties of an atom that are periodic in…

A: Ionization energy is the energy which is required to remove the electron from an atom. The removal…

Q: 1. How does the electron theory explain (a) why a rubber rod becomes negatively charged when rubbed…

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Q: 56. Refer to the periodic table and write the predicted electron configuration for each of the…

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Q: Rubidium and bromine atoms are depicted at right. (a) What monatomic ions do they form? (b) What…

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Q: In the periodic table, elements in group 6A

A: Introduction: In periodic table ,group 6a elements are Oxygen, Sulphur,Selenium, Tellurium,…

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: The element (X) is located in the third period and the group (5A) and the element (Y) is located in…

A: The atomic number of the element located between them is 33 & the name of the element is…

Q: Be sure to answer all parts. The following graph depicts the relative magnitudes of the first five…

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Q: Rank elements: Na, Mg, Al, and K, in increasing order of: (i) atomic size; (ii) ionization energy,…

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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: Using only their location in the periodic table, rank the atoms in each set by decreasing atomic…

A: Given :  (a) Mg, Be, Ba (b) Se, Br, Cl (c) Ca, Se, Ga  we have to arrange the given atoms in order…

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

A: White = Hydrogen, HBlue = Nitrogen, NRed = Oxygen, OGrey = Carbon, C

Q: Consider two elements, Element A and Element B, from the periodic table. Element A is located in…

A: Introduction:The periodic properties of elements play a crucial role in understanding their atomic…

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

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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.