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प्रश्न
What is an α (alpha) particle?
उत्तर
An α-particle is a doubly charged helium ion (He2+) containing two protons and two neutrons. It is formed by removing two electrons from the helium atom.
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संबंधित प्रश्न
Mention the basic tendency of an atom which makes it to combine with other atoms.
Fill in the blanks.
The electrovalent bond or ionic bond is called as _____ bond
How many atoms of each kind are present in the following molecules: calcium oxide, chlorine, water, carbon tetrachloride?
How many electrons are required by each atom mentioned in (a) to attain the nearest noble gas configuration?
How many electrons are required or released by each atom in calcium oxide to attain the nearest noble gas configuration?
Name an element which does not contain neutron.
\[\ce{^24_12Mg}\] 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.
State the type of bond between Y and Z and give its molecular formula.
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Draw the geometric atomic structure of the following atom showing the number of electrons, protons and neutrons in them:
\[\ce{^23_11Na}\]
