The elements x, y,and z have atoms with outer electron shell configurations containing 4,7 and 8 electrons respectively. state and describe the type of bonding which is likely to occur in the following cases: (1) between atoms of x ? (2) between atoms of y ? (3) between atoms of z ? (4) between one atom of x and four atoms of y?

Answers:

(1) Covalent

(2) Covalent

(3) None

(4) Covalent

Step-by-step explanation:

Element x is in Group 14 (carbon family); Element y is in group 17 (halogens); Element z is in Group 18 (noble gases).

Bonds between nonmetals are covalent bonds formed by sharing electrons.

(1) The x-x bonds are probably covalent bonds in a network solid, because it is difficult to form four covalent bonds between two atoms.

(2) Each y atom needs one electron to complete its octet. If they each share one electron, they will both have a octet. The y-y bond will be a single covalent bond.

(3) Each z atom is a noble gas. Noble gases do not form z-z bonds, because they already have an octet.

(4) Each xy₄ molecule will have four polar covalent x-y bonds pointing toward the corners of a regular tetrahedron.

the equation that correctly represent the reaction for formation of ammonia is

n2+ 3h2 → 2nh3 (answer d)

1 mole of nitrogen gas (n2) react with 3 moles of hydrogen gas (h2) to form 2 moles of ammonia ( nh3). this is in a process known as haber process were iron is used as a catalyst and reaction take place that a higher temperature and pressure. the process is exothermic hence energy is released.

1.consider the following balanced equation and answer parts a through. show calculations for each part.  

3 ag(s) + 4 hno3(aq) → 3 agno3(aq) + no(g) + 2 h2o(l)  

a. calculate the number of moles of agno3 produced by the reaction of 3 moles of ag with excess hno3. if the number to the left of the compound represents the number of moles of the compound which are present, then 3 moles of ag react with 4 moles hno3 to produce 3 moles agno3 (aq).

so the answer to a would be 3 moles.

b. calculate the number of moles of agno3 produced by the reaction of 108 grams of ag with excess hno3.  

i'm not sure how to plug in the grams of silver into an equation using moles to find how many moles are produced.

c. calculate the number of grams of agno3 produced by the reaction of 108 grams of ag with excess hno3  

d. calculate the number of moles of no produced as a byproduct of the reaction of 108 grams of ag with excess hno3.  

e. calculate the number of grams of no produced as a byproduct starting with 108 grams of ag and excess hno3.  

explanation: