1 Elements in Group 8A are known as the ________. Group of answer choices noble gases halogens chalcogens alkali metals alkaline earth metals 2 Which species has 18 electrons? Group of answer choices 45Sc3+ 39K 35Cl 32S2- 27Al3+
1 Elements in Group 8A are known as the ________. Group of answer choices noble gases halogens chalcogens alkali metals alkaline earth metals 2 Which species has 18 electrons? Group of answer choices 45Sc3+ 39K 35Cl 32S2- 27Al3+
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter3: Atomic Shells And Classical Models Of Chemical Bonding
Section: Chapter Questions
Problem 1P: Before the element scandium was discovered in 1879, it was known as “eka-boron.” Predict the...
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Question
1 Elements in Group 8A are known as the ________.
Group of answer choices
noble gases
halogens
chalcogens
alkali metals
alkaline earth metals
2
Which species has 18 electrons?
Group of answer choices
45Sc3+
39K
35Cl
32S2-
27Al3+
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