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प्रश्न
Select the correct answer from the choice in the bracket to complete the sentence:
An element ‘X’ has six electrons in its outer or valence shell. Its valency is __________.
विकल्प
+2
−2
−1
उत्तर
An element ‘X has six electrons in its outer or valence shell. Its valency is −2.
APPEARS IN
संबंधित प्रश्न
Give the following a suitable word/phrase.
The electrons present in the outermost shell.
FILL IN THE BLANK
In an atom, the last shell containing electrons is called its..................shell.
Tick the most appropriate answer.
How many times is a proton heavier than an electron?
- 1500
- 1800
- 1840
- none of these
WRITE SHORT ANSWER
Name the isotopes of hydrogen.
Fill in the blank of the following statement :
The electron has _________ charge, the proton has _________ charge, and the neutron has _________ charge.
Compare an electron and a proton in respect of mass and charge.
Compare a proton and a neutron in respect of mass and charge.
State the location of electrons, protons and neutrons in an atom.
Name the three fundamental particles of an atom.
State its one drawback of Rutherford’s atomic model.
