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Question
An atom of an element contains 29 electrons and 35 neutrons. Deduce the electronic configuration of that element.
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Solution
The electronic configuration of an atom of an element containing 29 electrons is:
1s2 2s2 2p6 3s2 3p6 4s1 3d10
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RELATED QUESTIONS
Choose the correct option.
The energy difference between the shells goes on ________ when moved away from the nucleus.
Choose the correct option.
The value of Plank’s constant is -
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 |
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 |
Answer in one sentence:
If an element ‘X’ has mass number 11 and it has 6 neutrons, then write its representation.
An atom of an element contains 29 electrons and 35 neutrons. Deduce the number of protons.
Hydrogen has three isotopes: protium (1H), deuterium (2H or D) and tritium (3H or T). They have nearly the same chemical properties but different physical properties. They differ in ______.
