Explain why Na, A1 < 0 but Mg, A1 > 0  This is asking why is it exothermic to add an electron to Na but endothermic to add an electron to Mg – or why is it easier to add an electron to Na than it is to Mg?

Q: An atomic cation with a charge of +2 has the following electron configuration: 1s 25 2p°3s 3p°3d² 6.…

A:

Q: Which of the following elements has 7 valence electrons? Select one: a. C b. Br c. N d. S e. Be

A: Given elements, a. C b. Br c. N d. S e. Be

Q: Which of the following correctly ranks the ions Ca2+, S2–, K+, Cl–, and H+ in order of increasing…

A:

Q: 4. Using the Lewis structure of nitrogen as a model, please draw the Lewis structure for each of the…

A:

Q: Determine which is the larger species. Lit O Li Determine which is the larger species. CI CI-…

A: -&gt; If positive charge increases then size is decreases. -&gt;If negative charge increases then…

Q: An atomic anion with a charge of – 1 has the following electron configura 1s²2s²2p° What is the…

A: Anion is formed by gain of electrons.

Q: Place the following ions in order from smallest to largest ionic radii: K+, Na+, Mg2+, and Al3+.

A:

Q: How do you calculate the effective nuclear charge for the valence shell electrons of Ca^2+?

A: Effective Nuclear Charge: -The effective nuclear charge is the net charge an electron experiences in…

Q: ΔGo

A:

Q: g0. Which of the following is NOT true of the Sc* ion? a) It has the same electron configuration as…

A: We know that, due to positive charge on atom, number of electron decreases. So,

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

A: Periodic table is the arrangement of atoms in groups and periods according to their increasing…

Q: 12)Give the formula for 2 negative ions that would have the same number of electrons as each of the…

A:

Q: 6. What are the no of protons and electrons on the following ions: (a) Ca , (b) F , (c) 0? , and (d)…

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: An atomic cation with a charge of +1 has the following electron configuration: 2 [Kr] Ss°4«®5p? What…

A: In an atom, the atomic number forms the identity of the element. Atomic number is the number of…

Q: Determine if the figures A, B, and C below are stable. Write yes or no. C 11+ 11+ figure A: the…

A: There are two types of ions: Cations Anions Cations are formed by the loss of electrons from the…

Q: When atoms of sodium (Na) and chlorine (Cl) combine to form salt (NaCl), the Na ion is smaller than…

A: Sodium chloride is commonly known as rock salt which is an ionic compound in which sodium atoms…

Q: When two neutral objects are rubbed together, one object will lose ________________ and the other…

A: We are authorized to answer one question at a time, since you have not mentioned which question you…

Q: Below is an abbreviated form the Periodic Table. O Periodic Table of the Elements Mg K Rb Cs Ba Ni…

A: Reactivity of the elements decreases from left to right across the period in the periodic table.…

Q: Use the periodic table to order the following atoms from smallest (1) to largest (4) Al Ba P Ca

A: Al is smallest and Ba is largest

Q: Identify the appropriate atoms by selecting each atom and assigning it a map number of 1 until all…

A: A carbon molecule is chiral when it is attached to 4 different atoms or groups.

Q: A neutral object is sketched below, in black and white. There are positive and negative electric…

A:

Q: Q1. a- Please calculate, how many atoms exist in 1 cm^3 of Copper (Cu) with the density 8,93 gr /…

A: denisty of Cu = 8.93 g/cm3 Therefore in 1cm3 of volume 8.93 g of copper has been occupied(8.93 g /…

Q: Species Number of electrons Number of electrons Number of core in valence shell electrons Ca Cs+ p3.…

A: A neutral atom consists of same number of protons and electrons. When the atom loses electron, it…

Q: Which of the following combination of elements is the most reactive? Cs and I Na and Br Cs and Br…

A: Greater is the difference in electronegativity between two atoms in a molecule, higher will be the…

Q: 2Mg (s ) + O (g ) 2MGO (s) Magnesium (Mg) reacts with oxygen gas (O) to produce magnesium oxide…

A: Given Reaction2 Mg (s) + O(g)  → 2 MgO(s)Correct movement of electron = To be determined

Q: Calculate the charge for the following: An aluminium atom An aluminium atom that has lost 3…

A: According to the Bartleby guidelines we have to answer only one question so please submit different…

Q: Q6. Consider the following figure, explain at the molecular level which one of these structures is…

A: Photovoltaic cells contain doped silicon.  When sunlight falls on photovoltaic cells, photons…

Q: ATOMS Electronic Atomic Configuration- only with the highest atomic Name of PRODUCTS Element/s…

A: Given products: Evaporated milk. NFA rice

Q: Part A The formation of CsCl from Cs(s) and Cl2 (g) involves the following steps: 1. Cs(s)→Cs(g) 2.…

A: Part (A): During the change in physical state of a substance heat energy is involved in the…

Q: 15 I11 Na Quick Comprehension Choices (highlight the correct choice) 1. Na (gained or losty an…

A: The ionic bond is formed between Na &amp; F atoms. Now we have to select  and highlight correct…

Q: Consider two identical metal spheres, A and B. Sphere A carries a charge of – 48 µC and sphere B…

A: As two sphere touches to each other, negative charge will be transferred from the sphere with a…

Q: Which of the following statements must be true for the following equation to apply?…

A: The given equation is an expression for the energy of stationary state of electron which was given…

Q: lonic compound Metal Number of cation nonmetal number of anion total total charge = 0 valence…

A: Ionic compounds are formed with the help of cation and anion. The ionic charge is generally balanced…

Q: Some common ions based on metals are Select one: 3+ 2+ 2+ а. Li Ag Ва 4+ 2+ b. Fe, Ba Ва Al 2+ 2+ c.…

A: The question is based on the concept of periodic properties . We have to identify which of the metal…

Q: Sodium (Na) has 2 electrons in its inner shell, 8 in its next shell and I in its outer shell. What…

A: An atom is the basic and fundamental unit of matter. An atom consists of electron and the nucleus in…

Q: Given the following data, S(s) + O2(g) => SO2(g) ΔGo = -294 S(s) + 3/2 O2(g) => SO3(g) ΔGo = -390…

A: Applying Hess's rule.

Q: What determines the magnitude of the charge of an ion? In other words, why does Na become Na+ and…

A: The tendency to form an ion is determined by the fact that each element wants to achieve a stable…

Q: ELEMENTS: Ca, K, Al, Mg,  S,  O,  P,  F  Now put 8 different possible combinations together.…

A: We have to write the 8 different molecular formula using Ca, K, Al, Mg,  S,  O,  P,  F using these…

Q: What is the value of -12°F in units of °C? O -6.7 249 O -24 none of the above O 16

A:

Q: 2. Which one of the following equations represents the electron affinity of chlorine? Ch(g)+ é -…

A: Electron affinity of chlorine is represented by the following eqn : Cl (g) + e– ---&gt; Cl– (g) +…

Q: 38. Given: Al, 0, CI, N. Which has the greatest tendency to donate electrons and form positive ion?…

A: Multiple question given here,

Q: An atomic anion with a charge of –1 has the following electron configuration: [He] 25°2 p* 4 What is…

A:

Q: Is Ni and Cu  Different elements, isotopes or ions?

A: Isotopes: Each of two or more forms of the same element that contain equal numbers of protons but…

Q: How many atoms are there in FCC? Select one: a. 2 b. 4 c. 6 d. 5

A: Given,  The number of atoms present in FCC is:

Q: According to Coulomb's law, which ionic compound A-D has the smallest electrostatic potential energy…

A: Given: Order of size of anions = F&lt;Cl&lt;Br&lt;I To find: Ionic compound that has smallest…

Q: x Al(NO3)3 +y Na,S zAl,S3 +1NANO3

A: According to the Law of conservation of mass " all atoms of different elements must be equal on both…

Q: 32. In which group do all the elements have similar chemical properties? a) P, S, Cl b) Ag, Cd, Ar…

A: 32.  The element present in the same group of the periodic table has the same chemical properties.…

Q: Neutral Magnesium atom (gives/gains) electron and becomes a Lion. gives 2, Mg+ gains 2, Mg 3+ O…

A:

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.