Properties of Protons: Positively charged particles in the nucleus (center) of an atom.
Properties of Neutrons: Neutral particles that have no electric charge in the nucleus.
Properties of Electrons: Found outside the nucleus of the Atom..
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A)Calcium-This because calcium has two valence electrons hence it is a metal therefore it will form an ionic bond with carbon.
Condensation is when water vapour becomes liquid. Therefore, it would be e

where
the Avogadro's constant that relates the number of particles to their number, in the unit moles
.
The molar mass of propanol- mass per mole propanol- can be directly deduced from its molecular formula with reference to a modern periodic table.

of propanol molecules would thus have a mass of 
Answer : The correct option is, (1) 0
Explanation :
Oxidation state or oxidation number : It represent the number of electrons lost or gained by the atoms of an element in a compound.
Oxidation numbers are generally written with sign (+ and -) first and then the magnitude.
When the atoms are present in their elemental state then the oxidation number will be zero.
As per question, 'Mn' atom is a free element that means it is present in their elemental state then the oxidation state will be zero.
Hence, the correct option is, (1) 0