Question

1. Among the following which one is trivalent cartoon:
(A) N-3
(B)Al+3
(C)Ca+2
(D) 0-2

2. Molecular mass of SO4
(A)94
(B)96
(C)98
(D) 100

3. Formula of aluminium nitrate:
(A)AINO3
(B) Al(NO3)2
(C) AI2(NO3)3
(D)AI(NO3)3

4. write an example of isotone.

5. write four names of wool bearing animal.

6. Explain any two properties of wool.

7. write down the differences between isotopes and isobars.

please give me answer of all question.​

Answer 1

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1. ᴀ

2. B

3. A.

4. Examples of isotones include carbon-12, nitrogen-13 and oxygen-14. These atoms all have six neutrons and six, seven and eight protons respectively. A mnemonic that can be used to differentiate isotones from isotopes and isobars is as follows: Same Z (number of protons) = isotopes

5. sheep, goat, cammel , rabit.

6. The characteristics of Wool fiber or protein fibers are as follows: They are composed of amino acids. They have excellent absorbency. ... They have poor resistance to alkalis but good resistance to acids.

7. Atoms having the same number of protons (Z) but different number of neutrons (N) are isotopes. Atoms having the same mass number (A) are isobars. Atoms having the same number of neutrons (N) but a different number of protons (Z) are isotones.

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Answer 2

Answer:

(1) b

(2)b

(3)c

(4)Examples of isotones include carbon-12, nitrogen-13 and oxygen-14. These atoms all have six neutrons and six, seven and eight protons respectively.

(5)Sheep. The most common wool animal is the sheep. ...

Goats. Mohair and cashmere come from goats. ...

Lamas. The Lama genus of animals, all of whom originate in South America, includes llamas, alpacas, vicunas and guanacos. ...

Camels. ...

(6)The characteristics of Wool fiber or protein fibers are as follows: They are composed of amino acids. They have excellent absorbency. ... They have poor resistance to alkalis but good resistance to acids.

(7)The below table gives a few differences between isotopes and isobars.

...

Isobars.

Isobars Isotopes

Atomic numbers are different Atomic numbers are the same

Chemical elements are different same chemical elements but in different forms