The number of neutrons present in a nitrogen atom is ___.
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There are 15 protons and 22 neutrons in the nucleus of an element. What is its mass number?
When milk becomes sour, ___ is produced.
Galvanization a process to prevent rusting involves use of ___ coating to steel or iron.
Which of the following scientists gave the law that governs the force of attraction/repulsion between two charged particles?
The pH of a solution, whose hydrogen ion concentration is 1 x 10 mole per litre, will be ____.
If the electronic configuration of elements A and B are 1S2, 2S2 2P6, 3S1 and 1S2, 2S2 2P6, 3S2 3P4 respectively, then the formula of the compound formed by the combination of these elements will be:
The maximum number of electrons that can be accommodated in a shell is indicated by the formula
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