1. Which of the following substances is an element? А. Ice В. Coal С. Sand D. Iron 2. Which of the following statements about the structure of an atom is INCORRECT? A. The nucleus is composed of electrons and neutrons, for which surrounding the nucleus is a cloud of protons. В. Most of the atom is empty space. С. Electrons move around the nucleus at a high speed. D. Neutrons and protons are much heavier than electrons. 3. Which of the following statements about an atom is/are correct? (1) Nucleus carries no charge. (2) The mass of an atom concentrates at the nucleus. (3) Electrons are moving at high speed around an atom. (1) only (2) only А. В. С. (1) and (3) only (2) and (3) only D. 4. Which of the following statements about isotopes is/are correct? (1) They have the same electronic arrangement. (2) They have the same chemical properties. (3) They have the same mass number. (1) only (2) only А. В. (1) and (2) only D. (2) and (3) only С. 18 5. Which of the following statements concerning the element X are INCORRECT? (1) It is likely a noble gas. (2) It has an electronic arrangement of 2,8,8. (3) It has 10 protons. (1) and (2) only (1) and (3) only С. А. В. (2) and (3) only D. (1), (2) and (3) 6. Which of the following pairs of elements has the same number of occupied electron shells in their atoms? (1) Aluminium and argon (2) Silicon and calcium (3) Boron and oxygen (1) only (2) only А. В.
1. Which of the following substances is an element? А. Ice В. Coal С. Sand D. Iron 2. Which of the following statements about the structure of an atom is INCORRECT? A. The nucleus is composed of electrons and neutrons, for which surrounding the nucleus is a cloud of protons. В. Most of the atom is empty space. С. Electrons move around the nucleus at a high speed. D. Neutrons and protons are much heavier than electrons. 3. Which of the following statements about an atom is/are correct? (1) Nucleus carries no charge. (2) The mass of an atom concentrates at the nucleus. (3) Electrons are moving at high speed around an atom. (1) only (2) only А. В. С. (1) and (3) only (2) and (3) only D. 4. Which of the following statements about isotopes is/are correct? (1) They have the same electronic arrangement. (2) They have the same chemical properties. (3) They have the same mass number. (1) only (2) only А. В. (1) and (2) only D. (2) and (3) only С. 18 5. Which of the following statements concerning the element X are INCORRECT? (1) It is likely a noble gas. (2) It has an electronic arrangement of 2,8,8. (3) It has 10 protons. (1) and (2) only (1) and (3) only С. А. В. (2) and (3) only D. (1), (2) and (3) 6. Which of the following pairs of elements has the same number of occupied electron shells in their atoms? (1) Aluminium and argon (2) Silicon and calcium (3) Boron and oxygen (1) only (2) only А. В.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Atomic Structure
The basic structure of an atom is defined as the component-level of atomic structure of an atom. Precisely speaking an atom consists of three major subatomic particles which are protons, neutrons, and electrons. Many theories have been stated for explaining the structure of an atom.
Shape of the D Orbital
Shapes of orbitals are an approximate representation of boundaries in space for finding electrons occupied in that respective orbital. D orbitals are known to have a clover leaf shape or dumbbell inside where electrons can be found.
Question
Transcribed Image Text:1. Which of the following substances is an element?
А.
Ice
В.
Coal
С.
Sand
D.
Iron
2. Which of the following statements about the structure of an atom is INCORRECT?
A. The nucleus is composed of electrons and neutrons, for which surrounding the nucleus is a cloud of
protons.
Most of the atom is empty space.
В.
С.
Electrons move around the nucleus at a high speed.
Neutrons and protons are much heavier than electrons.
3. Which of the following statements about an atom is/are correct?
(1) Nucleus carries no charge.
D.
(2) The mass of an atom concentrates at the nucleus.
(3) Electrons are moving at high speed around an atom.
(1) only
(2) only
А.
В.
С.
(1) and (3) only
(2) and (3) only
D.
4. Which of the following statements about isotopes is/are correct?
(1) They have the same electronic arrangement.
(2) They have the same chemical properties.
(3) They have the same mass number.
(1) only
(2) only
А.
В.
С.
(1) and (2) only
D.
(2) and (3) only
18
5. Which of the following statements concerning the element X are INCORRECT?
(1) It is likely a noble gas.
(2) It has an electronic arrangement of 2,8,8.
(3) It has 10 protons.
(1) and (2) only
А.
(1) and (3) only
(2) and (3) only
В.
С.
D.
(1), (2) and (3)
6. Which of the following pairs of elements has the same number of occupied electron shells in their atoms?
(1) Aluminium and argon
(2) Silicon and calcium
(3) Boron and oxygen
A.
(1) only
В.
(2) only
(1) and (3) only
(2) and (3) only
С.
D.
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