The given isotope of Neptunium is
Alpha decay of an isotope results in daughter nuclide with mass number less by 4 units and atomic number less by 2 units than the parent isotope.
Alpha decay of Neptunium-237 can be represented as:
Beta decay of the above formed protactinium nuclide can be represented as:
Gamma decay releases only energy in the form of gamma rays, the nuclide remains the same.
γ
The new atom formed after the given decays is
(1) N2 (3) Na
(2) NH4+ (4) NaHCO3
The species that significantly represents a chemical compound is known as NaHCO3. This is also known as Sodium bicarbonate or sodium hydrogen carbonate. Thus, the correct option for this question is D.
A chemical compound may be defined as a type of chemical substance that is mainly composed of many similar molecules that contain atoms of more than one chemical element. These atoms are typically held together by chemical bonds.
According to the context of this question, Na is sodium and N2 is dinitrogen or simply nitrogen gas. Both these chemical constituents are classified as the type of chemical element. While NH4+ is a polyatomic ion which is known as an ammonium ion.
So, NaHCO3 is classified into the category of a chemical compound. This is because it mainly consists of sodium, hydrogen, carbon, and oxygen.
Therefore, the species that significantly represents a chemical compound is known as NaHCO3. This is also known as Sodium bicarbonate or sodium hydrogen carbonate. Thus, the correct option for this question is D.
To learn more about Sodium bicarbonate, refer to the link:
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Answer:
4.) NaHCO3
Explanation:
In a compound, two or more elements are chemically combined. NaHCO3 is a compound containing the elements sodium (Na), hydrogen (H), carbon (C), and oxygen (O). N2 and Na are elements. NH4+ is the polyatomic ion ammonium.Zoom
Answer: Option (1) is the correct answer.
Explanation:
Compounds in which atoms transfer electrons result in the formation of ionic bond. Whereas when atoms in a compound share electrons then they result in the formation of covalent compounds.
Also, it is known that like dissolves like. Hence, water being an ionic compound itself dissolves other ionic compounds.
Thus, out of the given options HCl is a covalent compound, therefore, HCl is the compound that becomes less soluble in water as the temperature of the solution is increased.
AgNO3 + NaCl yields AgCl + NaNO3
Fe2O3 + 3H2O yields 2Fe(OH)3
CH4 + 2O2 yields CO2 + 2H2O
2Al +H2O yield 2Al(OH)3 + 3H2 (answer A)
is an example of single replacement reaction
This is because single replacement reaction involve an element reacting with a compound and take place of another element in that compound. Al an element react with to yield Al(OH)3 and H2. Al take place of H + therefore the reaction above is example of single replacement.
(2) nonmetallic properties and ionization energy
(3) metallic properties and atomic radius
(4) metallic properties and ionization energy
Answer: 3) metallic properties and atomic radius
Explanation: reference table s trust me lol
The metallic properties and atomic radius generally decrease when the elements in Period 3 on the Periodic Table are considered in order from left to right.
The correct option is (3) metallic properties and atomic radius.
As we move across Period 3 on the periodic table from left to right, the elements change from metals to nonmetals. Metallic properties generally decrease across the period because the electrons are added to the same energy level, resulting in increasing effective nuclear charge and stronger attractions between the nucleus and the valence electrons.
At the same time, the atomic radius generally decreases across the period due to the increasing effective nuclear charge, which pulls the electrons closer to the nucleus.
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Answer:
First one, 12.0.
Explanation: