Match the vocabulary word with its definition. 1. the measure of the distance from one point to another si system 2. the metric system of units time 3. the quantity of matter a body possesses length 4. that which flows onward uniformly mass

Answer :

(1) Length

(2) SI system

(3) Mass

(4) Time

Explanation :

Length : It is defined as the measurement of the distance from one point to the another point.

SI system : SI system means the international system of units and it is the modern form of metric system. It is defined as a scientific method to express the magnitude of the several basics units.  There are seven basic units in the system from which the other units are derived.

The seven base unit are, meter for length, kilogram for mass, second for time, ampere for current, kelvin for temperature, mole for amount of substance and candela for intensity.

Time : It is defined as the continuous progress of situation in present, past and future taken as a whole.

Mass : It is defined as the amount of matter present in an object.

b is the correct answer

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atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8