What is formed when helium atom loses one electron?
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Which shows the order in which vertebrates evolved?
Milk of Magnesia is used as a
Who among the following holds the office during the pleasure of President?
I. Attorney General of India
II. Governors of states
III. Comptroller and Auditor General of India
Which type of reaction occurs when carbon burns in oxygen to give carbo dioxide?
Nuclear sizes are expressed in a unit named
Nuclear sizes are expressed in a unit called "Fermi" which is a unit of length equal to 10−15 metre (one femtometre), used in nuclear physics. It is similar to the diameter of a proton.
Isotopes have ______.
I. similar physical quantities and different chemical properties
II. different physical properties
III. similar chemical properties
___ is the number of shells for elements of the 3rd period.
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