第二章原子结构与元素周期律doc（The second chapter is atomic structure and periodic law of elements doc）.docVIP

第二章原子结构与元素周期律doc（The second chapter is atomic structure and periodic law of elements doc） The second chapter is atomic structure and periodic law of elements First, the multiple-choice question 1. the scientist who puts forward the periodic law of elements and makes the first periodic table of elements according to the periodic law is (A) Dalton (B), Priestley (C), Mendeleev (D), A Vergadero 2. the outermost layer of an element has two electrons, the element (A) is a group II A element (B), a metallic element (C), a nonmetallic element (D), and is not sure what type it belongs to 3. it is known that A is a group A element, and B is a group A element. Their atomic numbers are m and N, and A and B are the same periodic elements. The following relationship is wrong (A) n = m + 1 (B) n = m + 11 (C) n = m + 25 (D) n = m + 10 4. the outer electron number of a certain element X is equal to the neutron number in the nucleus, and 6 grams of compound XO2 can be obtained by taking the element 2.8 grams with oxygen fully. The position of the element in the periodic table is (A) third cycles (B), second cycles (C), group IV, main group (D), V main group 5., the right picture is a part of the short period in the periodic table. If there are 5 electrons on the outermost electron layer of the A atom, the following statement is incorrect (A) the simple substance of D can react with the aqueous solution of B hydride (B) strong acidic oxide hydrates A than the corresponding B corresponding high valence oxide hydrate (C) B hydrides are more stable than hydrides of C (D) atomic radius A B C 6. metal (Fr) natural francium is minimal, 21 known its isotopes are radioactive, it is one of the most important elements in the alkali metal elements. According to the position in the periodic table, the nature of the prediction is incorrect (A) in the known element, it has the largest atomic radius (B) a chemical Fr2O oxide is produced in combustion in air The chemical formula (C) oxide hydrate