6. The element with the electron A) Be E) none of the above 17. Which of the fol
ID: 637127 • Letter: 6
Question
6. The element with the electron A) Be E) none of the above 17. Which of the following pairs will form ionic bonds with one another? DyScf h aoe A)N, C B) Na, Ca C) Cs, Br 18. The charge on a sulfide ion is B) 2+ C) 0 D) 2- E) none of the above 19. Which of the following elements is most likely to form an ion with a-1 charge? A) Mg B)Si D) CI E) none of the above 20. What is the formula of the ammonium ion? A) Am B) Am C) NH D) NH4 E) none of the above 21. What is the formula of a compound formed by the ions M and X3-? A) M2Xs B) MiXa C) MX D) M2X E) none of the above 22. The formula for the compound chromium(I) nitrate is A) CNOs B) CrNOs C) CrNO D) CrNO;) E) none of the above 23. What is the name of Mg(PO)? A) trimagnesium diphosphate B) magnesium diphosphate C) trimagnesium phosphate D) magnesium phosphate E) none of the above bond. E) none of the above 24. A chemical bond formed between two identical atoms will be a(an) A) atomic B) covalent C) hydrogen D) ionic 25. Which representation of a methane molecule is not correct? (A methane molecule is composed of one carbon atom and four hydrogen atoms.) A)CH4 B) H C) D) E) none of the above 26. A triple bond involves the sharing of pairs of electrons between the atoms E) none of the above 27. The molecule SiCla has a shape A) tetrahedralB) bentC) planarD) pyramidal E) none of the above 28. A molecule in which the central atom forms three single bonds and has one lone pair is said to have a shape A) bent B) linear C) planar D) pyramidal E) none of the above 29. When the reaction shown is correctly balanced, the coefficients are HBr+Ca(OH)2CaBr+H:O B)1, 1, 1,2 C)2,1,1,2 D) 2,2,1,1 E) none of the above A) 2, 1,1,1 ?? 3r 20 2 H B 10Explanation / Answer
ANSWER:
16.) The given electronic configuration is for oxygen atom. Hence, option (C) is correct.
17.) Cs and Br element can form ionic bond with each other. Hence, option (C) is correct.
18.) The charge on the sulfide ion is 2- . Hence, option (D) is correct.
19.) Cl element is most likely to form an ion with -1 charge. Hence, option (D) is correct.
20.) The formula of the ammonium ion is NH4+. Hence, option (D) is correct.
21.) The formula of a molecule by the ions M2+ and X3- is M3X2. Hence, option (B) is correct.
22.) Chromium(II) nitrate = Cr(NO3)2.
Hence, option (D) is correct.
23.) Mg3(PO4)2 = magnesium(II) phosphate.
Hence, option (D) is correct.
24.) The bond formed between between two identical atom is known as covalent bond.
Hence, option (B) is correct.
25.) Option (D) is correct.
26.) Option (C) is correct.
?27) Option (A) is correct.
28.) Option (D) is correct.
29.) Option (E) is correct.
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