The electron configuration of an element is shown below. 1s^2 2s^2 2p^6 3s^2 3p^6

Based on the electron configuration, write one chemical property of this element.

It is a noble gas

Explanation:

It can form some compounds under various extreme conditions

this is Ar, a noble gas, a gas at STP and are basically has little chemical reactivity,

aplanation

:he electron configuration of an element is shown below.

1s^2 2s^2 2p^6 3s^2 3p^6

Based on the electron configuration, write one chemical property of this element.

all of the s an p orbitals ae filled, so this is a noble gas  with atomic # =

2 + 2 + 6 + 2 + 6 = 18 so

this ie element #18 and is Argon,Ar

all noble gases are gases at STP and are basically hae little chemical reactivity,a

state the principle of separating two immiscible liquids by separating funnel. describe an activity with diagram to separate a mixture of water and kerosene oil. answer: immiscible layers separate out in layers depending on their densities in separating funne

a mercury barometer is a device that uses the physical properties of mercury in a tube to measure barometric pressure. mercury barometers are used for : -

1. measurement of atmospheric pressure  

2. determining the altitude of a place

3. weather forecasting

4. calibration and checking of aneroid barometers

5. application in fluid mechanics

6. measurement of pressure in aircrafts

7. surface weather analysis

8. preparation of barographs

9. usage in physical sciences like physics, astronomy & chemistry

10. preparation of aircraft altimeters

characteristics of mercury barometer : -

1.used to define and measure atmospheric pressure.

2.on the average at sea level the column of mercury rises to a height of about 760 mm.

3.this quantity is equal to 1 atmosphere.

4.it is also known as standard atmospheric pressure.

5.a barometer in which the weight of a column of mercury in a glass tube with a sealed top is balanced against that of the atmosphere pressing on an exposed cistern of mercury at the base of the mercury column, the height of the column varying with atmospheric pressure.