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

Q: What are lanthanide elements?

A: What are lanthanide ?

Q: Which of the listed elements is most metallic?(a) Al (b) N (c) P (d) O

A: Which of the listed elements is most metallic? (a) Al (b) N (c) P (d) O

Q: process

A: Dear student I have given answer to your question in the image format.

Q: Describe the formation of heavier elements during stars' formation and evolutions; Give at least 10…

A: Introduction :  An element is a group of atoms which have same number of protons, in pure form they…

Q: 212. Explain the following diagram (a) and (b) and compare two models and associated heories…

A: These  are the models of JJ Thomson and Ernest Rutherford.

Q: Who is credited with arranging the periodic table? How are the elements arranged in the modern…

A: Periodic table is a table which shows the elements arranged in order of increasing atomic number of…

Q: Describe two ways that atoms may combine with other atoms.

A: Atoms form chemical bonds to make their outer electron shells more stable.

Q: Give the three isotopes of hydrogen and their uses

A: Isotopes elements having same atomic number but different mass number

Q: What is this element? [Ne] 3s2 * a. Neon b. Magnesium C. Aluminum d. Potassium As you go farther…

A:

Q: .85 If one gallon of gasoline contains about 2.0 g of lead, how much lead (in kg) is emitted into…

A: This is a pure logic question. Let us take the information given first. 25 miles - 1 gallon It…

Q: Explain the similarities and differences as compared to element 118 Og if a new element was…

A: A question based on periodic trends that is to be accomplished.

Q: What chemical reaction happens when green dye changes to blue when expose to air?

A: when green dye changes to blue when expose to sir a chemical reaction happens that is redox…

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: What is the full electron configuration of Mg?

A:

Q: Each element: has unique physical properties O has unique chemical properties O is made of a single…

A: Element :- It is a pure substance consisting of same type of atoms that all have same number of…

Q: Calcium, Sulphur and selenium. Which elements can gain electrons and how many. And which ones can…

A: Calcium has 2 valence electrons and is a metal. Hence, it will give up 2 electrons.

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: DO NOW: Describe the process happening in this image in as much detail as possible (complete…

A: The given nuclear reaction is,   86222Ra  ----------> 84218Po +       24He    • However,  Ra is…

Q: Describe Thomson’s model of the atom. How might itaccount for the production of cathode rays?

A: The atomic model proposed by Thomson was the plum-pudding model. According to Thomson's atomic…

Q: Give some evidence and describe the formation of the heavier elements during star formation and…

A: Heavy elements were formed only billions of years after the formation of the star.

Q: Why are the noble gasses stable? Group of answer choices The balance of protons and neutrons The…

A: The noble gas elements are most stable in a corresponding period because of their electron shell…

Q: The electron configuration of an atom determines how much energy is involved in its reactions. The…

A: As Rubidium lies below K in the same group, its property to react with water will be similar to the…

Q: What is used as basis for the better arrangement of elements in the periodic table and the key to…

A: Basis for the better arrangement of elements in the periodic table and the key to the discovery of…

Q: Refer to the illustration above to answer the questions below. 1. Similar with the electron, what…

A: Hi,According to our community guidelines, we can only answer three subparts, if they are not…

Q: what are 2 incompatible elements? are calcium and chlorine incompatible?

A: Rubidium, Barium, Uranium, and Lanthanum are incompatible elements.

Q: How are elements heavier than helium formed in the stars, particularly until iron?  How are elements…

A: The chemical element helium has the atomic number 2 and the letter He in its name. It is the first…

Q: What's the electron configuration of Chlorine and why this element is essential for our planet?

A: The states of matter contain small particles. These particles are so small that they cannot be seen…

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…

Q: It the type of energy that happens in the core of the atom   a. solar b. thermal c. nuclear d.…

A: Solar as the name suggest energy that come from heat and light of sun.

Q: How are calcium and phosphorus related?

A: In comparison with calcium, plasma phosphorus exists in both organic and inorganic forms, including…

Q: 8) A chemistry student reacts a black metallic element with an element that exists as a bright blue…

A: Hey, since there are multiple questions posted, we will answer one question. If you want answer for…

Q: An Element from Group 5A and Group 6A shared a Chemical Bond. This entails that

A: The 5A and 6A are the groups present towards the right side of the periodic table. The elements of…

Q: What are periodic properties? Explain periodicity using an example from everyday life

A: Below attached file showing the details answer. All the best.

Q: How long does it take the Earth to revolve around the sun? O 24 hours O 365.26 days O 29. 5 days O…

A: All elements found on our planet form in outerspace. Ferrous/ Iron has the atomic number '26'. It is…

Q: Isotopes can be used in studies of metabolic pathways because Their half-like sulfur allows a…

A: Radioctive isotopes which includes isotopes of sulfur , carbon   , deuterium  atom Location or…

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 to make francium into a stable atom.

A: Periodic table represents the arrangement of the elements in increasing order of their atomic…

Q: Use the electron configurations of Si and O to explain why these atoms combine chemically in a…

A: The electron configuration of Si and O atoms are given below.

Q: What's the electron configuration of Magnesium and why this element is essential for our planet?

A:

Q: Which pair of elements has the most similar properties? (a) Sr and Ba                (b) S and Ar(c)…

A: To determine the pair of elements that has the most similar property. (a) Sr and Ba(b) S and Ar(c) H…

Q: Describe the interrelationship between protons, neutrons and electron's and the ways in which…

A:

Q: The atomic radius for radioactive radon (Rn) is Density for radioactive radon (Rn) is Boiling…

A: Radon is an element having atomic number 86. Its symbol is Rn.

Q: what are the properties of cathode rays and anode rays?

A:

Q: 1. Why were the heavier elements not formed the way that the light elements were? 2. How are stars…

A: 1) The lightest elements ( hydrogen, Helium, deuterium , lithium) were produced in the Big Bang…

Q: How is an atom of the element xenon (Xe) likely to act during a chemical reaction? It will likely be…

A: the correct option is as follows:

Q: 23 A student tests the properties of an element and finds that it is malleable, shiny, and conducts…

A: The metals are hard, can be beaten into sheets, can be drawn into wires, shiny, sonorous, etc. A…

Q: Three isotopes of lithium witch is the most abundant atom?

A: Interpretation-  To tell about three isotopes of lithium which is the most abundant atom .…