Question
Which of the following is an alpha particle which is
emitted in radioactivity?Solution
Alpha particle consists of a helium atom having 2 electrons, 2 protons and 2 neutrons. Radioactive decay (also known as nuclear decay or radioactivity) is the process by which an unstable atomic nucleus loses energy by emitting radiation, such as an alpha particle, beta particle with neutrino. A material containing such unstable nuclei is considered radioactive Hence, option A is correct.
Dry powder fire extinguishers contain
Which element is denoted by the atomic number 28?
Which substance is a colorless to faintyellow oily liquid with characteristics similar to tear gas?
Formula of ‘Quick Lime’ is __________
What process is used to create a protective oxide layer on aluminum?
The chemical name of the Vitamin B6 isÂ
The Kerosene is a mixture of _______.
What is the chemical formula of the mineral malachite?
The green colour of the leaves is due to-
Which of the following is the most reactive element in the Periodic table?
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