Which two elements on the periodic table are in the same period? O Sn and Rb O K and Ba O F and Cl O Se and Te

Q: 1 “Isobars” are isotopes of different elements having the same mass number. Write the isotopic…

A: The two isobars given are  1) K-40 2) Ca-40

Q: In which set of elements would all members be expected to have very similar chemical properties?

A: Cu, Ag, Au is the correct option.  Elements belonging to the same group of similar chemical…

Q: Which of the following statements is true? O Water is an example of an element. O Protons and…

A:

Q: An atom in which the number of protons is no longer equal to the number of electrons is ___.   A.…

A:

Q: A biochemist who is studying the properties of certain sulfur (S)–containing compounds in the body…

A: Elements are arranged depending on their chemical and physical properties. Sulfur is a group of 16…

Q: The newly discovered element Nh (Nihonium), with atomic number 113, would be a member of which…

A: Atomic number of this newly discovered element Nihonium (Nh) is 113. In the periodic table, period…

Q: ö: j y- :0 :0 :0= :o:

A:

Q: 1 Elements ________ exhibit similar physical and chemical properties. Group of answer choices in…

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: What do these four elements have in common? Hydrogen (H) be Oxygen (0) 4e 2e Carbon (C) Na 2e 1e Be…

A: We are given structures of 4 elements we need to describe which thing is common to all.  In an atom…

Q: 8. Which pair of elements do you expect to be most similar in their chemical properties? a) K and Fe…

A: Most similar in their chemical properties

Q: Give one example (atomic symbol and name) for each of the following. a. a main-group…

A: Hi, since you have posted multiple questions. As per our guidelines, we will answer the very first…

Q: Which of the following is NOT a Representative Element O Ni Sn Rb Sb O Pb O

A:

Q: Which of the following element is in period 4 Zr He Ca Bi Ag Ca Bi Ag

A: We know that  the  arrangement of elements in the  respective period of the  periodic table is based…

Q: What elements are in the same GROUP! O O, F Na, Mg O N, P O Al, Si

A: The elements in the periodic table of elements are arranged in Groups and Periods according to their…

Q: Which of the following statements is/are true about 55Mn²+? (1) this ion has 25 protons (2) this ion…

A: Manganese (Mn) is the memeber of first transtion elements and d-block element.  Its atomic number is…

Q: Q4. Which element is a main-group metal with an even atomic number?(a) K (b) Ca (c) Cr (d) Se

A: To find: The main group metal with an even atomic number.

Q: Q5. Which element is a halogen?(a) Ne (b) O (c) Ca (d) I

A: Halogen belongs to 17 groups of the periodic table. Halogens are gaseous in nature. Halogens are…

Q: (c) 35 (d) 13 3. In the periodic table, if oxygen were assigned an atomic weight of one, what would…

A: given, atomic weight of O is assumed to be 1

Q: estion 19 A 20.0 g sample of an element contains 4.95 x 1023 atoms. Identify the element. O Mg O Fe…

A:

Q: A 0.383 g sample of an element contains 1.943 × 10 21  atoms. What is the element symbol

A: Given, amount of sample =0.383 gnumber of atoms of the sample =1.943×1021 atomswe are asked to…

Q: Rank the masses of the elements from lightest to heaviest. To rank items as equivalent, overlap…

A: Atomic masses of the elements: B : 11 u Cr: 52 u Li: 7 u

Q: Set I Set II Set III Не Na Kr N As Na O Ar Au Si H P Rb Pd Не Pd

A: • Since, the elements having same outer electronic configuration in their atoms are arranged in…

Q: Which element is a halogen? (a) Ne (b) O (c) Ca (d) I

A: The substances that have a tendency to occupy space are considered as matters. The matters can be…

Q: Unit 9: Compounds - PS How many atoms of aluminum (Al), sulfur (S), and oxygen (0) are in each…

A: Given compound has molecular formula , Al2(SO4)3

Q: Which element would most likely be a shiny solid at room temperature and have a high density? A. Kr…

A: Generally metals are shiny solid at room temperature and have a high density.

Q: Which of the statement is false? O potassium is an alkaline earth metal. O Lithium is an alkali…

A: Given : Statement  To find : False statement

Q: what is the elemental form of fluorine? F(g) F- (aq) F+(g) or none of the these?

A:

Q: Elements of which of the following groups on the periodic table always occur naturally as monatomic…

A: The groups given are, A) Noble gases B) Halogens C) Chalcogens  D) Pinctogens E) Group 4 A (14)…

Q: Which element is not a main-group element?a) Se                      b) Mo                     c) Sr…

A: Main-group elements: S-block and P-block elements are knows as main-group elements. They are,…

Q: Which of the following statements is/are true about 59CO3+? (1) this ion has 27 protons (2) this ion…

A: We have to predict the correct option regarding given element.

Q: 5) Elements in the last column of the periodic table are called, 6) What distinguishes one element…

A: 5. Elements in the last column of the periodic are called Noble gases 6. The atoms of the element .…

Q: 16) What's the atomic number of sulfur-34 ? A) 34 B) 18 C) 16 17) In the formula of hydroxylapatite…

A: According to our guidelines we can answer only three subparts

Q: ( a ) Eva l u a te t h e expre s s i o n s 2 * 1, 2 * 11 + 32,2 * 11 + 3 + 52, and 2 * 11 + 3 + 5 +…

A: (a) In the expression, the total number of valence electron is calculated in which 2 is the number…

Q: Which of the following elements fo Gold O Fluorine Hydrogen Sulfur Oxygen O Helium Olodine Antimony…

A:

Q: The Group on the Periodic Table that BEST demonstrates the concept that elements in the same Group…

A: An atom is the basic and fundamental unit of matter. An atom consists of electron and the nucleus in…

Q: Which element does not belong with the other four? 8O 18Ar 17C l7N 53I A) O B) Ar C) Cl D) N…

A: The element  that does not belong with the other four is given below

Q: Which two elements on the periodic table are in the same period? OH, Na O B, Ga OK, Sc He, Ne

A: Which two elements on the periodic table are in the same period = ?

Q: Which of the following elements would you expect to have chemical properties most similar to those…

A: on the basis of the periodic table, we can say that the elements that belong to the same group have…

Q: Which pair of elements do you expect to be most similar in their chemical properties?a) K and Fe…

A: Most similar in their chemical properties

Q: What would you predict the charge of an ion from column 1A (or column 1 from ptable) to be? O a O b…

A: Column belongs to alkali metals which have one extra electron in their valence shell from noble gas…

Q: if the density of an element 1.5 g/ml with volume 1.8 L, its mass will be .. 2700 O 2.7 O 1200 1.2…

A: Given question is asking about the mass of substance, if density and volume of solution is present .…

Q: Which of the following elements is the least metallic?   a. Aluminum   b. Phosphorus   c. Magnesium…

A: The least metallic elements are generally placed at the right-side upper corner of the periodic…

Q: Write isotopic symbols in the form X–A (e.g., C-13) for the given isotope. the hydrogen isotope with…

A: Isotopes are atoms of same elements which have same atomic number but different mass number. In…

Q: 33 - Which of the elements has similar chemical properties with sulfur (S) element? O A) Xe O B) Rb…

A: The element which has a similar chemical properties with the Sulfur element to be determined.

Q: 92. The three most stable oxides of carbon are carbon monox- ide (CO), carbon dioxide (CO.), and…

A: Given the three oxides of carbon are as follows: CO CO2 C3O2

Q: Most of the elements in the periodic table are O metals O non-metals O metalloids gases

A: Metalloids - Elements which have properties intermediate of metals and non-metals.  Metals - They…

Q: 12. Crde the elements below that are in the same group. N. Ne 13. Cirde all of the elements below…

A: Inorganic chemistry.