Why is chlorine a halogen

Q: Which is a halogen?

A: The element  belonging to group 17 in the periodic table are called  as halogens.   They are…

Q: What are lanthanide elements?

A: What are lanthanide ?

Q: III. Name one element in the Halogen Group.

A: Halogen group means, group 17 element in the periodic table. see below

Q: What is lithium?

A: Pure substances that are made up entirely of atoms and have the same number of protons in their…

Q: Why Lanthanoides and actinoides are placed at the bottom of the periodic table?

A: The reason why lanthanoids and actinoids are found at the bottom of the periodic table has to be…

Q: Ph 2. (Across) Heaviest element that a star can fuse. (symbol) Ph 4. (Across) In IUPAC naming this…

A: Since you have asked multiple questions that are different, we will solve only one question for you…

Q: Discuss the Production of the Halogens?

A: The production of halogens has to be discussed below.

Q: In what physical state does chlorine exist at −65°C?

A: The physical state of an element depends upon its boiling point and melting point temperatures.

Q: Using n for the principal quantum number, write the electron configuration for the valence electrons…

A: Valence electrons are those electrons which are present in the outermost shell of an atom.

Q: Enlist and explain the ores of Beryllium and methods of production of Beryllium

A: Beryllium is the element in the periodic table having the symbol ‘Be’ and atomic number 4. It is a…

Q: lanthanide ion lan

A: The Horrock's equation is expressed as: q=AkH2O-kD2O-B Where, A and B are the proportionality…

Q: (a) Why is calcium generally more reactive than magnesium?(b) Why is calcium generally less reactive…

A: a.

Q: Can you identify the lead (wire) color that represent the cathode?

A: Basically in electrolysis the red color wire indicates anode as a positive electrode at the same…

Q: What is the chemical formula for the compound formed between indium(II) and chlorine?

A: A compound is formed by the crisscross of valences of the cation and anion.

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: Which of the following elements is tetratomic in its standard state? O sulfur selenium carbon O…

A: The elements given are sulfur i.e. S, selenium i.e. Se, carbon i.e. C and phosphorus i.e. P.

Q: Why is nitrogen innert

A: Nitrogen (N) is an element with atomic number 7 which exists as dinitrogen gas (N2) at room…

Q: What do you mean by deuterium ? how it is symbolized ?

A: Given term,           Deuterium

Q: Helium is an inert gas, meaning that it doesn't readily combine with other elements. What five other…

A: Given, Helium is an inert gas, meaning that it doesn't readily combine with other elements.

Q: Which of these elements is most reactive? Li K Na

A: alkali metals are most reactive among other elements of the periodic table,  Because they easily…

Q: What were two of the three reasons it took so long for lithium to be available for use in the United…

A: Lithium has its atomic symbol of Li. Its atomic number is 3. It is in the group of alkali metals. It…

Q: What does hydrogen have in common with the halogens?Explain.

A: The periodic table gives the tabular arrangement of elements arranged in increasing order of the…

Q: What is an alkali? Give an example.

A: Given What is an alkali? Give an example.

Q: What are alums? Give examples other than potassium alum.

A: Double salts are the salts that dissociate into all its constituent ions completely. Example is Mohr…

Q: Which elements are post-transition metals? A. Europium, Gadolinium, Terbium B. Uranium, Neptunium,…

A: Post-transition metals are also termed  as the poor metals which are a group of metals on the…

Q: Using your knowledge of alkali metals, halogen gases and the periodic table of elements, explain why…

A: The periodic table makes the study of the properties and the configuration of different sets of…

Q: Write a balanced equation for the reaction of elemental strontium with each of the following:(a)…

A: Interpretation - To write a balanced equation for the reaction of elemental strontium with each of…

Q: What is used to test for chlorine? * A a glowing splint B damp litmus paper O C limewater

A: what is used to test for chlorine has to be given,

Q: What is the chemical formula for sodium perchlorate?

A: The chemical formula - It is the representation of the chemical composition  of the compound

Q: Which of the following is an alkaline earth metal? A.K  B.Cu  C.Mg  D.Na  E.Al

A: The elements that comes in group 2 of the periodic table are called alkaline earth metals.  They are…

Q: 35. Which of these elements form two stable oxides? A Silicon B Beryllium C Sulphur D Argon

A: Oxides are chemical compounds formed due to a combination of any element with molecular oxygen. The…

Q: What's the number of unpaired electrons in sulphur and why

A: Sulfur having atomic number 16

Q: what are the interesting properties  of  phosphorus

A: The interesting properties of phosphorus has to be given.

Q: MCQ 36: Halogen that can react with noble gases like Xe is A. F B. CI C. Br D. I

A: Noble gases are those element which have complete octet i.e., they have 8 electrons in their valence…

Q: Describe hydrogen

A: Hydrogen is an first element of periodic table.

Q: Describe alkali metals?

A: The alkali metals consist of the chemical elements lithium (Li), sodium (Na), potassium (okay),…

Q: what is the physical state of element Pb? what is the physical appearance of element Pb? what is…

A: Physical state of element Pb is solid at room temperature. Physical appearance of element Pb is…

Q: Look at equation 11: If Br,(g) + 2KCI (aq) reacted instead of CI, (g) + 2KBr (aq) could this…

A: Cl2  + 2e- → 2 Cl-     E° = 1.36 VBr2  + 2e- → 2 Br-     E° = 1.09 VBr2 (g) + 2 KCl(aq) → 2Br-  +…

Q: Write a general equation for the reaction of an alkali metal with each substance.a. a halogen b.…

A: Alkali metals are first group elements. They show a fixed valency of +1. Halides show -1 unit…

Q: Which halogen is used in the manufacture of photographic plates? O Fluorine O Chlorine O lodine O…

A: Photographic plates are used to capture and store the photographic items. These photographic plates…

Q: what is the physical state of element C? what is the physical appearance of element C? what is the…

A:

Q: If 5.3 g of gallium reacts with 5.3 g of oxygen to produce gallium oxide, what will we be left with…

A: Limiting reactant :-  A reactant whose number of moles are less than the number of moles  required…

Q: which element is a metal in period 5 of the periodic table

A: Periodic table:In a periodic table elements are arranged by atomic number, electron configuration,…

Q: What and the three chemical properties of halogens?

A: Halogen family is the group of elements that is present in Group VIIA of the periodic table.  The…

Q: How does a star produce such enormous amounts of heat and light

A: Stars are made mostly of helium and hydrogen, which are packed so tightly in a star that is the…