The bf3 molecule is planar. the attachment of a fluoride ion to the boron in bf3 through a coordinate covalent bond, creates the bf4 ion. what is the geometric shape of this ion?

The geometry of BF₄⁻ anion is tetrahedral

Explanation:

According to the Valence Bond Theory, the boron atom in BF₃ molecule is sp² hybridized. As one 2s and two 2p orbitals hybridize to form three sp² hybrid orbitals.

Therefore, the molecular geometry of BF₃ molecule is trigonal planar.

However, in a BF₄⁻ ion, the boron atom is sp³ hybridized. As it forms four sp³ hybrid orbitals by hybridization of one 2s and three 2p orbitals.

Therefore, the molecular geometry of BF₄⁻ anion is tetrahedral.

sorry idk the answer well to you i have a explaination

explanation: a formula which shows the arrangement of atoms in the molecule of a compound

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.