If Arsenic is to be isoelectronic with Se2 (selenide ion), it should gain 3 electrons lose 3 electrons O lose 2 electrons

Q: Which one of these would form an anion with a charge of -1? O

A: According to octet rule element has a tendency to attain stable electronic configuration of nearest…

Q: Which of the following ions is isoelectronic to Ne? O-2 OF-2 K+ O Al+2 None of these

A: Isoelectronic species(moreover, 'Iso' means same and 'electronic' means electrons) are those species…

Q: Locate each group on the periodic table and list the chargeof the ions it tends to form.(a) Group…

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Q: A main group element with the valence electron configuration 2s22p3 is in periodic group__________…

A: Given electronic configuration is 2s22p3

Q: Which of these elements is expected to have the greatest difference in its first and second…

A: Ans  Boron

Q: Considering only ions with charges of +1, +2, -1 and -2, or neutral atoms, give the symbols for 4…

A: Isoeletronic species are those species which have equal number of electrons present in them  Since…

Q: O oxygen O chlorine O barium Oboron

A: Multiple choice question is given here.

Q: Rank lithium, fluorine, and nitrogen in order of decreasing ionization energy

A: Introduction :  Ionisation energy is the amount of energy required to remove the highest energy…

Q: How does the structure of a lithium ion vary from that of a lithium atom?

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Q: Which of these is the smallest? Arsenic Selenium Bromine Krypton Iodine

A: Answer:- This question is answered by using the simple concept of variation of atomic size across…

Q: What species is represented by the following information? pt = 12 n° = 14 e¯ = 10 O Si4+ O Mg Ne Si…

A: Here the number of protons are 12; number of electrons available is 10 . In neutral atom number of…

Q: How is it that 147N has 5 electrons?

A: An isotope is represented by the system given as,AZX In this notation, X is the symbol of an…

Q: Give 2 cations and 2 anions that are isoelectronic with Kr

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Q: Determine the identity of each element based upon the following data. Period 3 element with the…

A: The given IE value(s) : IE IE value (kJ/mol) IE1 578 IE2 1817 IE3 2745 IE4 11575 IE5…

Q: What is the first ionization energy of your element? What are the most prevalent isotopes of your…

A: Part: (i) Ionization Energy: The energy which is required to remove one electron from its outermost…

Q: Predict the ionic charge for a phosphorus ion, P?–, based on the position of the element in the…

A: Predict the ionic charge for a phosphorus ion, P?

Q: Considering only ions with charges of +1, +2, -1 and -2, or neutral atoms, give the symbols for 4…

A: Since, Isoelectronic species means number of electron is same. Then,

Q: What happens when the compound HCl is formed?  Hydrogen transfers two electrons to chlorine.…

A: Hydrogen reacts with chlorine to form hydrogen chloride. The equation for the balanced chemical…

Q: Which of the following statement is untrue regarding halogen? Can exhibit multiple oxidation state…

A: Group 17th or the second last group of the periodic table is known as the halogen group.

Q: Explain the difference in first ionization energy between Li (520 kJ/mol) and Be (899 kJ/mol

A: This question is asking about the first ionization energy difference between Li and Be. We know it…

Q: Which element has the most electrons? Rh Co Pd2+ Ni2+

A: In this question, we have to find out the correct answer of given problem by the help of "Periodic…

Q: Which of the following elements would you expect to have the highest ionization energy? Pb Ge Cs…

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Q: Give an isoelectronic cation-anion pair

A: Isoelectronic species are those that have the same number of electrons.  The isoelectronic species…

Q: Which statement is true about an element with the generic valence electron configuration ns²np4?…

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Q: Differentiate between metal and non-metal on the basis of their chemical properties.

A: Metals are lustrous and opaque elements which are good conductor of heat as well as electricity. And…

Q: Write the electron configuration for P2. How many electrons are in the 3p orbital? How many total…

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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: How many core electrons are in N-2?

A: Given :- Atomic symbol = N-2  To find :- number of core electrons  Atomic number of N = 7

Q: Of the following, which element has the highest first ionization energy?   I Rb Sb In

A: Ionisation energy is define as the energy required to remove an electron from gaseous atom or an…

Q: Determine the systematic name for CaSO4

A: Determine the systematic name for CaSO4

Q: 4 Nitrogen is less reactive than flourine. Why could the effective nuclear charge be used to…

A: Effective nuclear charge is basically the actual nuclear charge faced by the valence electrons. The…

Q: Name the compounds of  NI3 , P4S3

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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: Briefly describe how lithium ion is used in anti-depression medication.

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Q: List the following from lowest to highest first ionization energy. Cl, Na, K

A: Ionization energy : The energy required to remove the highest energy electron i.e.valence electron…

Q: Discuss the different property trends of the elements ( for example atomic and ionic radius,…

A: ATOMIC RADIUS :-  The atomic radius of a chemical element is a measure of the size of its atoms,…

Q: Which of the following isoelectronic ions has the LARGEST size? O Rb* O Sr2+ O Se2- O Br

A: Rb+ , Sr2+,Se2-, Br-.     are isoelectronic.

Q: How many electrons are in the most likely ion formed from an atom located in group 5A and period 3?…

A: When a neutral atom gain or lose electron, then it is called as ion.  If it gains the electron then…

Q: O OE Ос A B Which element labeled A-E in the periodic table below will have an ionic charge of +2? D…

A: Elements of the group 1 will have an ionic charge of +1.Elements of the group 2 will have an ionic…

Q: Write any two similarties between lithium and magnesium.

A: Magnesium and lithium exhibit a diagonal relation. Lithium differs from other alkali metals due to…

Q: Fictional, thus not on the periodic table. Lz, a transition metal, forms the compound LzS₂ when…

A:

Q: Between which of the elements would have a delta (partial) positive charge. \delta+δ+   C - O…

A:

Q: Using its electron configuration, explain why antimony can form 3+ or 5+ cations.

A: Atomic number of antimony (Sb) = 51  So, it has total 51 electrons

Q: What are the Ions present in: 1) (NH4)2CO3 2) Zn(OH)2 3)Ba(NO3)2 4) PbS 5) Zn2(PO4)3 6) Hg2I2 7)…

A: We have to predict the ions present  in the following  ionic compounds  1) (NH4)2CO3 2) Zn(OH)2…