What are the differences between the chloride ion and the chlorine atom?

I. Chloride ion is lighter compared to chlorine atom

II. Chloride ion has more electrons compared to chlorine atom

III. Chloride ion has less protons compared to the chlorine atom

IV. Chlorine ion has the electron configuration of 2.8.8 while chlorine atom has the electron configuration of 2.8.7

Proton numbers of K, L, M and N are

Element K = 7

Element L = 8

Element M= 10

Element N =12.

Which of the following pair of elements can form ionic bond?

TABLE 1 shows the proton number for five elements J, K, L, M and N.

Based on TABLE 1,

I. J form covalent bond with M.

II. One atom L form a cation with charge +3

III. One atom K form one anion with charge -1

IV. N is a stable element and not reactive.

When sodium react with chlorine gas,

I. Each sodium atom accept one electron

II. Each chlorine atom donate one electron

III. An ionic compound is formed.

IV. Strong electrostatic attraction exist between sodium ion and chloride ion

Which of the following is ionic compound?

TABLE 2 shows the electron arrangement for P and Q.

Which of the following is False?

Element P and Q are Group 2 and Group 17 elements in Periodic Table.

Which of the following chemical formula and type of chemical bond is true when P react with Q?

Which of the following is true about ionic bond and covalent bond?

KL is the formula of an ionic compound.

Which of the following statements about KL is true?

I. K and L have octet structure in their outermost shell

II. One K atom accepts two electrons from one L atom

III. K and L have the same number of valence electrons

IV. K has one valence electron and L has seven valence electrons