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प्रश्न
How are X-rays produced?
उत्तर
When a beam of cathode rays is made to fall upon hard metallic targets like tungsten, X-rays are produced.
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संबंधित प्रश्न
(i) How many atoms of each kind are present in the following molecules: calcium oxide, chlorine, water, carbon tetrachloride?
(ii) How many electrons are required for their octet structure?
Why do they exist as monoatoms in molecules?
Name the following:
Metal with valency 2
Explain
Octet rule for the formation of sodium chloride
Draw orbit structure diagram of sodium chloride (NaCl).
Potassium (at No.19) and chlorine (at No.17) react to form a compound. Explain the formation of the compound on the basis of reduction.
\[\ce{^24_12Mg}\] and \[\ce{^26_12Mg}\] are symbols of isotopes of magnesium.
(a) Compare the atoms of these isotopes with respect to :
i. the composition of their nuclei
ii. their electronic configurations
(b) Give reasons why the two isotopes of magnesium have different mass numbers.
Give the orbital diagram of the following:
Magnesium chloride
Draw the geometric atomic structure of the following atom showing the number of electrons, protons and neutrons in them:
\[\ce{^40_20Ca}\]
Sodium having atomic number 11, is ready to ______ electron/ electrons to attain the nearest noble gas electronic configuration.
