Which of the following elements is an halogen?

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

A: Given electronic configuration is 2s22p3

Q: Which of the following is a property of noble gases as a result of their stable electron…

A: Electronic configuration of an atom is a shorthand method of writing the location of electrons in…

Q: Lithium Chloride Li CI red color Calcium Fluoride Са orange color Barium Sulfide Ba green color

A: "Since you have asked more than 3 subparts, I'll solve the first 3 and please post the rest parts…

Q: Rank the objects from lowest energy to highest energy nitrogen monoxide nitrogen dioxide dinitrogen…

A: No has lowest energy because of its linear structure and great bond strength. NO2 has a bent…

Q: Which of the following elements is expected to have the highest SECOND IONIZATION ENERGY:…

A:

Q: How does a proton affect an element's properties?

A: Matter is composed from the tiny particles known as atoms . Atoms are made from the subatomic…

Q: The newly discovered element Nh (Nihonium), with atomic number 113, would be a member of which…

A: Atomic number of this newly discovered element Nihonium (Nh) is 113. In the periodic table, period…

Q: An element with the electron configuration [Xe] 6s 4f145d would belong to which class on the…

A: Given :- electron configuration of an element = [Xe]6s14f145d9  To identify :- class of that element

Q: A 4570 g sample of an element contains 5.009x10^25 atoms. Identify the element.  - Fe - V - Cr -…

A:

Q: What is the number of electrons for GaI3?

A: The question is based on the concept of chemical bonding. We have to identify total electron present…

Q: Which elements are considered to be representative elements?

A: Whole periodic table classified into 3 parts:-  Transition elements  Representative elements…

Q: Is astatine a nonmetal metal or metalloid

A:

Q: which is most rare noble gas?

A: The rare gas is a gas that is present in very small amounts in the air. The rare noble gases are…

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

A:

Q: An acid is a type of material that will increase the concentration of  ___ in water solution.…

A: Autoionization of water takes place as follows:

Q: which group of elements is the most reactive which group of elements is the least reactive 

A: Reactivity refers to the ability of an element to participate in chemical bond formation either by…

Q: what property is used to separate the aluminum sub group III A from the iron Sub group III B?

A: Solubility  is the property which is used to separate  aluminium and Iron in the  mixture .

Q: Which of the following elements would have the highest first ionization energy?   Question 21…

A:

Q: Assignment 1) Memorize names and symbols of the elements in • the first three rows of the periodic…

A: As per our guidelines we can only solve first three questions. Please resubmit the other questions…

Q: Explain the organization of an atom of carbon.

A: The protons, neutrons, and electrons are the salient features of an atom. The protons present in the…

Q: Describe each of the Hydrogen isotopes, as well as their ions

A: Mainly three isotopes of Hydrogen occurs in nature. These are  protium (1H), deuterium (2H) and…

Q: What is the most reactive metal to least reactive metal out of: Zinc Tim  iron  magnesium…

A: Metals are good conductor of heat and electricity for example: aluminium, copper whereas non metal…

Q: Chemistry How many shielding (core) electrons does argon possess? (it is not 8)

A: Core electrons: Core electrons are the inner electrons of an atom and these electrons do not…

Q: What is the atomic weight for the element that is in group 5A and period 4?

A: given: group 5A period 4

Q: CaO(s) -635.5 NaHCO3(s) -947.7 Ca(OH)2(s) -986.59 Na,CO3(s) -1131 – 1432.7 - 1575.2 CaSO,() NACI(s)…

A:

Q: Which of the following elements is stable? O Sodium in group 1 Aluminum in Group 13 O Chlorine in…

A: Argon in group 18

Q: Which of the following elements would have chemical properties similar to Ca   K, Ba, Kr, or Sc

A: Elements from same group have same chemical properties

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: Which of the following should not be written as an electron dot symbol for a group 5 element?

A: Electron dot symbol is also known as  Lewis Structure.The electron dot symbol is used to represent…

Q: which element is most commonly bonded to the acidic hydrogen?

A:

Q: Which of the following noble gases is not reactive? O None of these are reactive helium and neon…

A: The question is asking us to identify which of the given noble gases are not reactive. Noble gases…

Q: Which of these is not a cation A NH4+ B Cl− C Mg2+ D K+

A: Introduction: Atoms are the neutral and smallest unit of element. Each atom consist of some…

Q: Which of the following elements is largest in atomic size? A) Ba B) Ca C) Mg D) Be

A: The atomic size or radius of the element is said to be the distance from the nucleus of an atom to…

Q: 19 - Which of the given elements has similar properties with iodine (I) A) Br B) Te C) Ar D)…

A: Generally, the elements of a given group have similar properties due to similar general electronic…

Q: what element would you expect to be very stable and unlikely to react with other elements

A: Given property of the elements,       Very stable and unlikely to react with other elements

Q: Arrange in order of increasing nonmetallic character (a) the Period 3 elements P, Cl, and Na(b) the…

A: On moving along the period, sodium to chlorine, the nuclear force of attraction increases due to…

Q: Which is the most common element in the universe?

A: Most common element in the universe is the one whose abundance is greater in earth than other…

Q: Consider Cr-54, Fe-54, Fe-58 and Ni-58 , which of this are isobars and which are isotopes

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Q: What are the family names for groups 3A, 4A, 5A, and 6A on the periodic table.

A: The family names for groups 3A, 4A, 5A, and 6A on the periodic table are given in step two.

Q: What is the differences between an Oxygen atom (16 amu, atomic number = 8) and a Calcium atom (46…

A: Oxygen atom = 16amu Calcium atom = 40amu  Metal- it have tendency to lose electron. Non metal - it…