CH3 is a trigonal planar and has a hybridization of sp3
acute
It depends whether you mean 3 is an angle or not And if it is it is 90 + 180 + 3=273.
It is an exterior angle and an interior angle plus an exterior angle add up to 180 degrees
1 plus 2 is equal to 3
In mathematics, an obtuse angle is defined as an angle greater than 90° and less than 180°. A right angle is 90°. An acute angle is greater than 0°, but less than 90°. Therefore, a 90° right angle plus any acute angle will always fulfill the requirements of an obtuse angle.
90, 120, and 180
Sp3 hybridization because of the three Hydrogens coming off of the Nitrogen plus one lone pair of electrons on the Nitrogen to satisfy it's octet rule.
This carbocation which only has six electrons is isoelectronic with BH3 and is believed to have a similar structure as gaseous molecular BH3, planar with bond angles of 120 0. The hybridisation would be sp2 with and empty p orbital.
OH alone would be linear shape AX1E3 bond angle 180o
ionic bond
ionic bond
The molecular shape for ( \text{PH}_4^+ ) (phosphonium ion) is tetrahedral. This is because phosphorus has four bonding pairs around it, which results in a geometry with bond angles of approximately 109.5 degrees.
acute
obtuse angle
It depends whether you mean 3 is an angle or not And if it is it is 90 + 180 + 3=273.
pi bond
Here is a covalent bond.