Ionic compounds are formed between a metal and non-metal. An ionic compound can be formed between strontium and chlorine and the compound is called strontium chloride.
Ionic compounds are formed by losing an electron from an electropositive element to an electronegative element. Thus between a metal and non-metal.
Ionic bonds are the strongest bond and it creates partial charges in the compound since the bonded electrons are attractively pulled towards the more electronegative element in the bond and thus the metal ions gets a positive charge and nonmetal gets a negative charge.
Covalent bonds are formed by sharing electrons between two nonmetals. Hydrogen and chlorine forms the covalent compound HCl. Similarly, nitrogen and oxygen always forms covalent bonds.
Sulfur and oxygen are comparable in electronegativities and thus forms a covalent bond. Therefore, the elements which forms an ionic compound are strontium and chlorine forming strontium chloride. Hence, option A is correct.
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Answer:
strontium and chlorine
Explanation:
b. 44.0 g
c. 66.0 g
d. 92.4 g
Chlorine
Uranium
Ammonia
Among the substances listed, ammonia (NH3) is a compound. The option D (ammonia) is the correct option.
Compounds can have various physical forms, such as solids, liquids, or gases, depending on the specific elements and the nature of their chemical bonds. They can also exhibit a wide range of chemical and physical properties, such as melting point, boiling point, density, solubility, and reactivity.
Chemical formulas are used to represent compound substances, indicating the types and numbers of atoms present in a molecule of the compound. For example, the chemical formula for water is H2O, representing two hydrogen (H) atoms bonded to one oxygen (O) atom. Ammonia is composed of nitrogen (N) and hydrogen (H) atoms bonded together. Carbon (C), chlorine (Cl), and uranium (U) are elements rather than compounds.
Therefore, Ammonia which is option D is the correct option.
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Answer:
Ammonia
Explanation:
Ammonia is a inorganic compound that is made up of single nitrogen atom.
Answer:
C) half the energy is carried by the electric field and half is carried by the magnetic field.
Explanation:
In any electromagnetic wave, half the energy is carried by the electric field and half is carried by the magnetic field . Electromagnetic waves are self-propagating transverse oscillating waves of electric and magnetic fields.
Answer & Explanation:
The difference between a physical reaction and a chemical reaction is composition. In a chemical reaction, there is a change in the composition of the substances in question; in a physical change there is a difference in the appearance, smell, or simple display of a sample of matter without a change in composition.
B The oxygen in the air forms ozone in presence of UV rays
C Dust and soot particles being suspended in the air
D Sulphur dioxide being released in the air
the answer is B not A
let me explain why see a says water vapor in the air turns to liquid water in the form of rain see that is a physical change not a chemical change it is B because it is undergoing a chemical change by the uv rays for that reason it is not D because that is just releasing sulfur dioxide in the air that is not a chemical change nor a physical change so then i leaves us with C so C is wrong because it just being suspended in the air not physical or chemical change
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