Advertisements
Advertisements
प्रश्न
An element X has mass number 40 and contains 21 neutrons in its atom. To which group of the Periodic Table does it belong?
विकल्प
Group 1
Group 4
Group 2
Group 3
MCQ
उत्तर
Group 1
Explanation:
e = 19 (2, 8, 8,1)
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
