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प्रश्न
Fill in the blank
A deficiency of electrons produces a ________ charge.
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उत्तर
A deficiency of electrons produces a positive charge.
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संबंधित प्रश्न
Write the names of `"Ca"("NO"_3)_2` compounds :
Write the names of `"FeS"` compounds :
Name three non-metals/radicals which have valency -1, -2, and -3.
State Dalton’s atomic theory.
An atom has 13 protons and 14 neutrons.
How many electrons would be present in this atom ?
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the mass number of X?
Fill in the blank
An _______ is electrically neutral.
How is the size of an atom indicated ?
What value has been given to the mass of this reference atom ?
Is it possible to see atoms these days ? Explain your answer.
Define the following term:
Atom
Electron, proton, neutron are the types of ______ in an atom.
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which element will gain electron?
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which will form positive ion?
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which will form negative ion?
Define the following term with an example.
Element
Name the sub-atomic particles.
A sample of vitamic C is known to contain 2.58 ×1024 oxygen atoms. How many moles of oxygen atoms are present in the sample?
The smallest unit of an element is ______.
The ______ are combination of atoms of various elements or the same element.
