out of first 100 elements, no. of elements having electrons in 3d orbital ( in their complete electronic configuration) are?
tell me the reason
- 33985 Views
- 2 Answers
2 Answers
- how can i prepare for board exams in just 15 days
- a man walks in rain with a velocity of 5km/hr.the rain drops strike at him at an angle of 45degree with the horizontal. velocity of the rain if it is falling vertically downward..
- What is the source of calcium for smooth muscle contraction in humans...
- is 110 is qualifying mark for neet 2017
- can anyone tell some questions from aiims paper 25 may
morning shift??
- wheather 8 month r really enough to crack neet exam
- For getting admission in AIIMS, do I want to qualify NEET exam?
- Bacteriophage M13 is a
1. ssRNA
2. ssDNA
3. dsDNA
4. dsRNA
- What is the syllabus for AIIMS MBBS?
- how many marks should I score to get seat in aiims
Practice Mock Test
aiims
The answer is 80. The 1st 20 elements till Ca does not have 3d orbital filled. Ca valence electrons enter 4s orbital . Filling of the 3d orbital begins after 4s orbital .So the Sc is the first element to have electrons in 3d. After that all elements till 100 has electrons in 3d orbital. so from 21 to 100 all have 3d electrons.