NURSING ANM AND GNM

NURSING EXAM QUESTIONS

HUMAN ANATOMY PHYSIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Combination of atoms in which the electrical charge is not distributed symmetrically
A
Nonpolar molecule
B
Ionic molecule
C
Covalent molecule
D
Polar molecule
Explanation: 

Detailed explanation-1: -A polar covalent bond is a covalent bond in which the atoms have an unequal attraction for electrons and so the sharing is unequal. In a polar covalent bond, sometimes simply called a polar bond, the distribution of electrons around the molecule is no longer symmetrical.

Detailed explanation-2: -Water has a polar structure as the distribution of electric charge is asymmetrically distributed (Figure 3-3).

Detailed explanation-3: -Propane is nonpolar, because it is symmetric, with H atoms bonded to every side around the central atoms and no unshared pairs of electrons.

Detailed explanation-4: -Water is a polar molecule because of the uneven distribution of electrons and therefore charge across the molecules shape. Opposite sides of the molecule have opposite charges.

There is 1 question to complete.