Question Bank
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Which gas is used to fill balloons for decoration?
What is the electronic configuration of Phosphorus (Z=15)?
The valency of an element with atomic number 13 is:
In the modern periodic table, Silicon is placed in:
An atom has 7 protons and 8 neutrons. What is its mass number?
Which of these elements has the largest atomic radius?
Which element is found in Group 2 and Period 3 of the periodic table?
How many electrons can the M-shell of an atom hold at maximum?
The electronic configuration of an ion \(O^{2-}\) is:
What is the number of neutrons in an atom of Carbon-14?
Which element has the highest electronegativity?
Which element is used in the manufacture of computer chips?
The valence of an element with atomic number 17 is:
Which element has the Latin name 'Hydrargyrum'?