The atoms of the elements having same difference between mass number and atomic number are called ______.
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Which of the following is a greenhouse gas or a gas, which can deplete the ozone layer?
Which one of the following is a bad Thermal Conductor?
Which of the following elements has the lowest melting point?
The amount of BaSO4 formed on mixing an aqueous solution of 2.08 gm of BaCl2 and excess of dilute H2SO4 is ___.
(atomic weights : Ba = 137, Cl = 35.5, S = 32, O = 16)
Which one of the following is a cation?
Which among the following has highest electron affinity?
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