Identify the missing daughter nucleus in the β– emission decay of 106ru below.

β⁻ emission is an emission of an electron from the parent atom while converting a neutron into a proton. Hence, the formed daughter nucleus has the same number of mass but the atomic number is higher by 1 and number of neutrons is lower by one than the parent atom.

After a β⁻ emission of ¹⁰⁶Ru, the formed daughter nucleus should have 106 as mass number but (44 + 1) = 45 as the atomic number.  

Hence the daughter nucleus is Rh (Rhodium) which has 45 protons (atomic number).

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.

i would say b

explanation:

but i think i would need more information than that