Activity 1 Points: 10 Electronic Structure and Bonding orbital 1. Ar, K+, Cl are

Question

Activity 1 Points: 10 Electronic Structure and Bonding orbital 1. Ar, K+, Cl are. elements (elements with the same number of electrons). What does the last electron occupy? 2. Give the electronic configuration for N-3. A) ls22s2 B) ls22s22p3 3. Identify the least electronegative atom. A) Na C) I E) O D) B 4. Give the number of nonbonding lone pairs of electrons in H2NOH. A) 0 B) 1 C) 2 E) 4 D) 3 5. Which of the compounds below have bonds that are predominantly ionic? A) KCI B) CF4 C) NH3 D) both A and B 6. Which of the following contain(s) polar covalent bonds? E) both A and C A) NH3 B) Na20 C) H2 D) KF 7. of the atoms forming a given bond determines if the covalent bond is polar or non polar? 8. The formal charge on nitrogen in the compounds below is CH3 N A) +2and -1 B) +1 and +1 C00 and+2 D) land-22 E) -2 and -1 9. Draw a Lewis structure for the molecule given and show all formal charges. b. CH3N2+. a. CH2CO 10. A molecule of acetonitrile CH3CN contains sigma bonds and pi bonds. A) 5, 2 B) 4,3 C) 4,2 D) 2, 2 E 4,0 11. Which carbon(s) in the following molecule is (are) sp hybridized? 4 5 2 3 A) C 1 B) C2 C) C 1.3 D) C4 E) C4, 5 12. What orbitalsoverlap to create the C-H bond in ethene (H2C CH2)? Bos-sp2 A) s-sp D) s-p E) p-p

Explanation / Answer

1) ans = 3p

   atmic number of Ar = 18

   Ar = K+ = Cl- = 18

   Electronic configuration= 1s2 2s2 2p6 3s2 3p6

Therefore,

last electron occupy 3p orbital.

2)  Ans = D

N = 7 = atomic number

     N-3 = 10

Electronic configuration= 1s2 2s2 2p6

3) ans = B - Na

   In a group from top to bottom, electronegativity decreases.

In a period from left to right, electronegativity increases.

4) ans = D - 3

   Nitrogen has 1 nonbonding lone pair of electrons.

Nitrogen has 2 nonbonding lone pair of electrons.

Therefore,

total nonbonding lone pair of electrons in NH2OH = 3

5) ans = A

KCl is predominantly ionic.

Bond between metal and non-metal is predominantly ionic.

K= metal

Cl = non-metal

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.