6:59 PM mail-attachment.googleusercontent.com No Service @5%D+ Question 1 (l poi

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6:59 PM mail-attachment.googleusercontent.com No Service @5%D+ Question 1 (l point) Which of the following represents the numbers of protons and electrons in a bromide ion, Br-? Question 1 options: 1) 35 p+ and 34 c- 2) 35 pt and 35 e 3) 35p+ and 36c- 4) 36 p+ and 36 e Save Question 2 (1 point) Which is the best formula for magnesium oxide? Question 2 options: 3) Mg.o Save Question 3 (1 point) Which compound contains a polar covalent bond? Question 3 options: ) HI 2) NaF 3) F 4) H Save Question 4 (l point)

Explanation / Answer

1) answer 3) 35 P and 36 e-

Br atomic number is 35 so protons are 35

Br has negative charge so electrons 35 +1 =36

2) answer : 1) MgO

Mg charge is + 2 and O charge is -2 . so compound is MgO

3) answer : 1) HF

reason : NaF ionic , H2,F2 non-polar and HF is polar compound

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