Which pair of elements below would be the least similar in their chemical properties?  a) Be-Al  b) B-Si  c) Li-Na   d) Li-Mg

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: In which set of elements would all memebers be expected to have very similar chemical properties? A)…

A: Periodic table represents the arrangement of the elements in increasing order of their atomic…

Q: Question attached

A: Complete the table Element Nuclear symbol Atomic number Mass number Proton Neutron Electron…

Q: A sample of the element Phosphorus is shown to have a mass of 33 and a charge of -3. How many…

A: The atom of an element is made up of sub-atomic particles. The major sub-atomic particles of an atom…

Q: Arrange the elements given below in the increasing order of their atomic size. (AKS 3h) Element A :…

A: The size of the atom depends on the electronic configuration of the atom. We know that size of the…

Q: Which element is a row 4 noble gas? (a) Ne (b) Br (c) Zr (d) Kr

A: The rows or periods of a periodic table are made up of elements with the same number of electron…

Q: The periodic table is organized into groups and periods of elements. The characteristics of a…

A:

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: Which of the following describes the element Ba? Choose all that apply:(a) is very reactive as a…

A: The element given is Barium i.e Ba.

Q: Which statement is true?(a) For a given element, the size of an isotope with more neutrons is larger…

A: For a given element, atoms having same atomic number with different mass number are known as…

Q: Which element has a chemical properties that are most similar to potassium? Cesium Sulfur Nitrogen…

A: The vertical column of the elements which are present in the periodic table is known as groups. Each…

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: Classify each element as an alkali metal, alkaline earth metal, halogen, or noble gas.a. sodiumb.…

A: Alkali metals are those metals that are electropositive monovalent and found in the group (I) of the…

Q: 67. Which pair of elements do you expect to be most similar? Why?(a) Si and P(b) Cl and F(c) Na and…

A: Periodic table is an arrangement of elements in the order of increasing atomic number from left to…

Q: Na CI These 2 elements are in the same Period, what Period would it be? 1 18 2

A: Sodium (Na) electronic configurations [ Ne] 3s1 , Last electron is in  3S ,So principal  quantum…

Q: Sr-90 has [ Select ] neutrons than Y-91

A:

Q: Is the statement consistent with Rutherford’s nuclear theory as it was originally stated? Why?…

A: The basic unit of matter is called atom. Various theories were given to explain structure of atom.…

Q: Part 2. Complete the empty cells/boxes in the table. Atomic Number Number Mass Electrons protons…

A: Atomic number of an element is equal to the number of protons or the number of electrons present in…

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: Choose all of the following that apply to oşmium, Os. a. Metalloid b. Alkali metal Oc. Transition…

A:

Q: hich of the following applies to the electron? (a) Charge = -1; (b) Mass = 1 amu; (c) Charge = 0;…

A: Particles that are smaller than atoms and that constitute the atom are called subatomic particle.…

Q: III. Choose the element being described using the hypothetical elements in the periodic table below.…

A: 1A group stands for alkali metals and group 2A is alkaline earth metals . As we go down the group…

Q: Classify each element as a metal, a semimetal, or a nonmetal. Metal Semimetal (metalloid) Nonmetal

A: Since you have asked multiple question, we will solve the first question for you. If youwant any…

Q: 13. Complete the table below. Symbol Atomic Mass Number of Number of Number of Number Number Protons…

A: Since you have provided a question with multiple sub parts, we will do the first three. If you want…

Q: Which element would you expect to show similar chemical properties to Na, Cl, P and O. Na

A: Elements of the same group have similar physical and chemical properties. So, in the first step, we…

Q: b Complete the following table for an isotopically-labelled atom or ion: Group of Element Group 2A…

A: To complete the following table for an isotopically-labelled atom or ion.

Q: Note that some of the elements in the table are isotopes. Circle the symbols of the isotopic ones.…

A: In neutral atom, Atomic number = number of protons = number of electrons   Mass number = atomic…

Q: Which of the following is the most important factor in determining the chemical properties of an…

A: Atoms consists of protons, electrons and neutrons

Q: Which one of the following species has as many electrons as It has neutrons? A) 1H C) 14c E) 14c2+…

A: The species that have many electrons as it has neutrons has to be given.

Q: 33. What is the net electrical charge of chlorine (CI) if it has 16 electrons? a. 0. b. +1 с. -1 d.…

A: Atom will be positively charged if it loses electrons (the net electrical charge depends on the…

Q: 5A 6A 7A 1A H. Li 2A ЗА 4A 8A He Ne Ar Kr Be Mg Са Na P. Al Ga Si CI Br According to this…

A: Modern periodic table was prepared by Henry Mosley which is based on modern periodic law according…

Q: What is the most common ion of Lithium? How many neutrons does it have?

A: Most common ion of lithium = ?  Number of neutrons in this ion = ?

Q: 8 C N 3 12 13 14 15 16 Transition elements Mg Al Si P 26 28 29 Fe Ni Cu 47 50 Ag Sn Questions and…

A: The question is based on periodic properties of the elements. we have been given certain elements.…

Q: ... How many protons, electrons and neutrons are in each of the following? a) 37Cl = protons 17,…

A: #(I): In a neutral atom, Number of protons(p) = Number of electrons(e) = Atomic number(Z) Number of…

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

A: We have given that   In a periodic table element are arranged in order of increasing atomic number,…

Q: Picture attached

A: The complete table has to be given.

Q: ving: Why are the elements' atomic masses not in strict increasing order in the periodic table even…

A: As per the policy, we are only allowed to answer only 1st question. To get the answer of other…

Q: what are metalloids?

A: given,Metalloids

Q: 7. Which of the following are incorrectly paired? a) K, alkali metal b) Ba, alkaline earth metal c)…

A: Since, you have asked multiple questions, we will solve the first question for you.  Question-7 : In…

Q: what is the atomic number of an ion with a positive three charge when it has 12 electrons? A) 18 B)…

A: Atomic number (Z) :-  The number of protons present inside the nucleus of an atom is called atomic…

Q: Which pair of elements do you expect to be most similar? Why?a) N and Nib) Mo and Snc) Na and Mgd)…

A: The elements belonging to same group will have similar properties.

Q: Which pair of elements do you expect to be the most similar? a. Molybdenum and Tin b. Nitrogen and…

A: Given,  a. Molybdenum and Tin  Electronic configuration of Mo = [Kr]4d55s1  Electronic configuration…

Q: A) Period 3 alkaline earth metal: B) Period 5 noble gas: C) Period 3 element with 4 valence…

A: Answer a, b & c ) :  A) Period 3 alkaline earth metal = ?  B) Period 5 Noble gas = ?  C) Period…

Q: A sample of naturally occurring silico 27.9769), Si-29 (amu = 28.9765) and Si-30 (amu = 29.9738). If…

A:

Q: Which one of the following species has a many electrons as it has neutrons? Select one: а. 14с b.…

A: In the nuclide symbol of an atom, Z-represents the atomic number which is number of protons present…

Q: Beryllium has an atomic number of 4. How many neutrons does the isotope beryllium-9 have? O 4 O 13 9…

A: * Atomic number = Number of protons  For the neutral atom , Number of electrons = number of protons…

Q: Group I (the alkali metals) includes lithium (Li), sodium (Na), and potassium (K). These elements…

A: Introduction The number of valence electrons (electrons which are located on outer energy level) of…

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.