whats wrong in this    Lithium is a main group metal and sodium is a main group metal. Lithium is in group 1A (1), and sodium is in group 1A (1). Titanium is a transition metal and gallium is a transition metal. Germanium is a metalloid and arsenic is a main group metal. Germanium is in group 4A (14), and arsenic is in group 5A (15). Argon is a nonmetal and bromine is a nonmetal. Argon is in group 8A (18), and bromine is in group 7A (17). Nitrogen is a nonmetal and oxygen is a nonmetal. Nitrogen is in group 5A (15), and oxygen is in group 6A (16).

In which group on the periodic table is Iron? O Alkali metal O Halogen O Alkaline earth metal Transition metal O Noble gas

Read each description in the first column of the table below. If any chemical element with atomic number of 92 or less matches the description, check Yes and enter the chemical symbol of an element that matches. Otherwise check No in the second column. description An element in Period 4 and Group 6A. A semimetal in Group 4A. An element in the nitrogen family with a higher atomic number than tin. A main-group element in Period 2. Does any element with Z ≤ 92 match the description? Yes O Yes Yes O Yes O No O No O No O No If you checked yes, give the symbol of an element with Z ≤ 92 that matches. x 0 7 Ś

Read each description in the first column of the table below. If any chemical element with atomic number of 92 or less matches the description, check Yes and enter the chemical symbol of an element that matches. Otherwise check No in the second column. description An element in Period 3 and Group 3A. A semimetal in Group 4A. An element in the nitrogen family with a higher atomic number than silicon. A transition element in Period 6. Does any element with Z ≤ 92 match the description? OYes O Yes Yes O Yes O No O No O No O No If you checked yes, give the symbol of an element with Z ≤ 92 that matches. 0 U 7

A combustion reaction involves the reaction of a substance with oxygen gas. The complete combustion of any hydrocarbon (binary compound of carbon and hydrogen) produces carbon dioxide and water as the only products. Heptane is a hydrocarbon that is found in gasoline. Complete combustion of heptane produces 7 liters of carbon dioxide for every 8 liters of water vapor (both measured at the same temperature and pressure). What is the ratio of carbon atoms to hydrogen atoms in a molecule of heptane?

5. Law of Multiple Proportions. Two elements, R and Q, combine to form two binary compounds. In the first compound, 14.0 g of R combines with 3.00 g of Q. In the second compound, 7.00 g of R combines with 4.50 g of Q. Show that these data are in accord with the law of multiple proportions. If the formula of the second compound is RQ, what is the formula of the first compound?

1.)What is the atomic number for the element that is in group 1A and period 6? 2.) What is the atomic number for the element that is in group 2A and period 5?  3.)What is the atomic number for the element that is in group 4A and period 3?  4.) What is the atomic number for the element that is in group 3B and period 4?

Read each description in the first column of the table below. If any chemical element with atomic number of S enter the chemical symbol of an element that matches. Otherwise check No in the second column. description An element in Period 2 and Group 4A. A metalloid in Group SA. An element in the nitrogen family with a lower atomic number than iodine. A main-group element in Period 5. Does any element with Zs 92 match the description? O Yes Yes O Yes O Yes O No O No O No O No If you checked yes, give the symbol of an element with Zs 92 that matches. 0 0

Read each description in the first column of the table below. If any chemical element with atomic number of 92 or less matches the description, check Yes and enter the chemical symbol of an element that matches. Otherwise check No in the second column. description Does any element with Z ≤ 92 match the description? If you checked yes, give the symbol of an element with Z ≤ 92 that matches. An element in Period 4 and Group 1A. Yes No A semimetal in Group 8A. Yes No ☐ An element in the nitrogen family with a higher atomic number than boron. Yes No ☐ A main-group element in Period 4. Yes No ☐ ☑

Read each description in the first column of the table below. If any chemical element with atomic number of 92 or less matches the description, check Yes and enter the chemical symbol of an element that matches. Otherwise check No in the second column. description An element in Period 2 and Group 5A. A nonmetal in Group 7A. An alkaline earth metal with a lower atomic number than rubidium. A transition element in Period 6. Does any element with Z≤ 92 match the description? Yes Yes Yes Yes No No No No If you checked yes, give the symbol of an element with Z ≤ 92 that matches. 0 X 0 0 5