Please help me with question 6b,7 and 8 -Goog...G perceptiof6B. Naturally occurring boron is composed of two isotopes. The percent abundanceand the mass of each isotope are listed below:19.9% of the boron atoms have a mass of10.013 atomic mass units.80.1% of the boron atoms have a mass of11.009 atomic mass units.Calculate the atomic máss of boron. Your response must include both a correctnumerical setup and the caleulated result.Students, draw anywhere on this slidelSlide 6/8 7. An element has an atomic number of 18. What is the principal quantumnumber (n) of its outermost electrons?(1) 1(2) 2(3) 3(4) 48. Which is the electron dot symbol of an atom of boron in the ground state?(1) B(2) B(3) B:(4) BStudents, draw anywhere on this slide!Pear DSlide 7/8acer

6 (B) ANS: Atomic mass= % abundant x atomic mass +% abundant x atomic mass /100 Atomic mass= 19.9…

Answered: Naturally occurring boron is composed…

Naturally occurring boron is composed of two isotopes. The percent abundance and the mass of each isotope are listed below:

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter9: Chemical Quantities

Section: Chapter Questions

Problem 1CR

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Question

Please help me with question 6b,7 and 8

-Goog...
G perceptiof
6B. Naturally occurring boron is composed of two isotopes. The percent abundance
and the mass of each isotope are listed below:
19.9% of the boron atoms have a mass of10.013 atomic mass units.
80.1% of the boron atoms have a mass of11.009 atomic mass units.
Calculate the atomic máss of boron. Your response must include both a correct
numerical setup and the caleulated result.
Students, draw anywhere on this slidel
Slide 6/8

7. An element has an atomic number of 18. What is the principal quantum
number (n) of its outermost electrons?
(1) 1
(2) 2
(3) 3
(4) 4
8. Which is the electron dot symbol of an atom of boron in the ground state?
(1) B
(2) B
(3) B:
(4) B
Students, draw anywhere on this slide!
Pear D
Slide 7/8
acer

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