Here are the answers for this quick check :>
Stay sleezy m'dudes
Q1) Which property do the elements in each column of the representative elements series of the periodic table have in common?
A1) number of valence electrons
Q2) Use the periodic table to answer the question.
Which element has six valence electrons?
A2) oxygen (O)
Q3) Use the periodic table to answer the question.
Which statement correctly compares the number of protons and electrons in atoms of rubidium (Rb) and calcium (Ca)?
A3) Rubidium has more protons and more electrons than calcium.
Q4) Potassium's atomic number is 19, and its atomic mass is approximately 39. How many neutrons does potassium have?
A4) 20
Q5) Which element does not have the same number of electrons in its outermost shell as the other elements in its group?
A5) helium (He)
A1) Ah, the elements in each column of the representative elements series of the periodic table have a common love for number of valence electrons. They simply can't resist them!
A2) Well, when it comes to having six valence electrons, oxygen (O) takes the cake. It's like the Barry White of the periodic table, serenading six electrons at a time.
A3) Ah, comparing rubidium (Rb) and calcium (Ca)? Let me tell you, Rb goes all out with more protons and more electrons than calcium. It's like the flashy cousin who likes to one-up everyone.
A4) Potassium, my friend, has an atomic number of 19 and an atomic mass of approximately 39. So, that means it has 20 neutrons hanging around. It's like a little neutron party!
A5) Oh, well, looks like helium (He) is the odd one out. It's like the black sheep of the group, not having the same number of electrons in its outermost shell as the others. Guess it's just trying to stand out and be unique.
To answer these questions, you need to use the periodic table and understand some basic concepts about the elements.
Q1) Which property do the elements in each column of the representative elements series of the periodic table have in common?
A1) The property that elements in each column of the representative elements series have in common is the number of valence electrons. Valence electrons are the electrons in the outermost shell of an atom.
To determine the number of valence electrons in representative elements, you can look at the group number of the element in the periodic table. The group number tells you the number of valence electrons for elements in that group. For example, elements in Group 1 have 1 valence electron, elements in Group 2 have 2 valence electrons, and so on.
Q2) Which element has six valence electrons?
A2) To determine which element has six valence electrons, you need to look at the periodic table and find an element in Group 16. Elements in Group 16 have 6 valence electrons. Based on this information, the element with six valence electrons is oxygen (O).
Q3) Which statement correctly compares the number of protons and electrons in atoms of rubidium (Rb) and calcium (Ca)?
A3) To compare the number of protons and electrons in atoms of rubidium (Rb) and calcium (Ca), you can check their atomic numbers. The atomic number of an element tells you the number of protons in its nucleus, which is also equal to the number of electrons in a neutral atom.
The atomic number of rubidium (Rb) is 37, and the atomic number of calcium (Ca) is 20. Since the number of protons is equal to the number of electrons in a neutral atom, you can compare their atomic numbers. Rubidium (Rb) has more protons (37) and more electrons (37) than calcium (Ca), which has 20 protons and 20 electrons. Therefore, the correct statement is "Rubidium has more protons and more electrons than calcium."
Q4) Potassium's atomic number is 19, and its atomic mass is approximately 39. How many neutrons does potassium have?
A4) To determine the number of neutrons in an atom, you need to subtract the atomic number from the atomic mass. The atomic number of potassium (K) is 19, and the atomic mass is approximately 39.
Neutrons are particles found in the nucleus of an atom that have no charge. As the atomic mass includes the mass of both protons and neutrons, subtracting the atomic number from the atomic mass gives you the number of neutrons. In this case, subtracting 19 (atomic number of potassium) from 39 (atomic mass) gives you 20. Therefore, potassium has 20 neutrons.
Q5) Which element does not have the same number of electrons in its outermost shell as the other elements in its group?
A5) To determine which element does not have the same number of electrons in its outermost shell as the other elements in its group, you can look at the group number and the number of valence electrons for each element.
Elements in the same group have the same number of valence electrons. For example, elements in Group 18 (Noble Gases) have 8 valence electrons, except for helium (He) which only has 2 valence electrons.
Since helium (He) has only 2 valence electrons while the other elements in its group have 8 valence electrons, helium does not have the same number of electrons in its outermost shell as the other elements in its group. Therefore, helium is the element that does not have the same number of electrons in its outermost shell as the other elements in its group.
Step 1: Q1) Which property do the elements in each column of the representative elements series of the periodic table have in common?
A1) The elements in each column of the representative elements series of the periodic table have the same number of valence electrons.
Step 2: Q2) Use the periodic table to answer the question.
Which element has six valence electrons?
A2) Oxygen (O) has six valence electrons.
Step 3: Q3) Use the periodic table to answer the question.
Which statement correctly compares the number of protons and electrons in atoms of rubidium (Rb) and calcium (Ca)?
A3) Rubidium (Rb) has more protons and more electrons than calcium (Ca).
Step 4: Q4) Potassium's atomic number is 19, and its atomic mass is approximately 39. How many neutrons does potassium have?
A4) To find the number of neutrons, subtract the atomic number from the atomic mass. In this case, subtract 19 from 39 to get 20. So, potassium has 20 neutrons.
Step 5: Q5) Which element does not have the same number of electrons in its outermost shell as the other elements in its group?
A5) Helium (He) does not have the same number of electrons in its outermost shell as the other elements in its group.