Please select a subject first
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Explain the following.
Hydrogen shows similarity with alkali metals as well as halogens.
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Answer the following question.
Outline the industrial production of dihydrogen from steam. Also, write the chemical reaction involved.
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Answer the following question.
Name the isotopes of hydrogen. Write their atomic composition schematically and explain which of these is radioactive?
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Name the following.
A compound having hydrogen, aluminium, and lithium as its constituent elements.
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Choose the correct option.
The unstable isotope of hydrogen is _________
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Identify the odd one.
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SI unit of mass is _________
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What do you mean by SI units?
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What is the SI unit of mass?
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Define Analytical chemistry.
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The energy difference between the shells goes on ________ when moved away from the nucleus.
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Choose the correct option.
The value of Plank’s constant is -
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Make the pairs:
| ‘A’ | ‘B’ |
| a. Neutrons | i. six electrons |
| b. p-orbital | ii. -1.6×10-19 C |
| c. charge on electron | iii. Ultraviolet region |
| d. Lyman series | iv. Chadwick |
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Match the following:
| Element | No. of Neutron |
| a. \[\ce{^40_18AR}\] | i. 7 |
| b. \[\ce{^14_6C}\] | ii. 21 |
| c. \[\ce{^40_19K}\] | iii. 8 |
| d. \[\ce{^14_7N}\] | iv. 22 |
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Answer in one sentence:
If an element ‘X’ has mass number 11 and it has 6 neutrons, then write its representation.
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An atom of an element contains 29 electrons and 35 neutrons. Deduce the number of protons.
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An atom of an element contains 29 electrons and 35 neutrons. Deduce the electronic configuration of that element.
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Gum in water is an example of ______.
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In Haber process of production of ammonia K2O is used as ______.
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Fruit Jam is an example of ______.
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