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Question
An atom of an element contains 29 electrons and 35 neutrons. Deduce the electronic configuration of that element.
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 ______.
