Which period of the periodic table  has no metals has no nonmetals has one post transition metal and two metalliods

Q: which of the following statements is not part of Dalton's original atomic theory?  all atoms of one…

A: According to Dalton's atomic theory, Atoms are indivisible. i.e. there is no subatomic particles…

Q: What THREE elements are rare-earth elements? calcium neodymium rhenium niobium samarium thallium…

A: In the above question the elements which are rare earth metal  among the option provided are…

Q: What is the chemical symbol of the element found in the 4th family and 5th period of the periodic…

A: Carbon family is called 4th family and there elements are C , Si , Ge , Sn , Pb , Fl

Q: Give some examples of metals and nonmetals?

A: Some examples of metals and nonmetals have to be given below.

Q: What is the approximate diameter ofthe nucleus in units of pm?

A: Given diameter of nucleus = 10-4 A. 1A = 10-10m. 10-4 A = 10-14 m.

Q: What is the first element in the periodic table

A: In the periodic table, the elements are arranged in increasing order of the atomic number of the…

Q: Identify the element that has an atomic number of 40. neon calcium zirconium bromine

A: Number of protons = Atomic number

Q: What are the "A" group numbers for Aluminum, Calcium, and Cesium, respectively?

A: In chemistry, a group refers to a column of elements in periodic table. In total there are 18 groups…

Q: Determine the number of protons and the number of neutrons in isotope. 2311Na

A: The number of protons and the number of neutrons in isotope 2311Na can be identified as, Atomic…

Q: family of elements in the periodic table and how are they differentiated/ distinct from each other?

A: The terms element family and element group are used to describe sets of elements sharing common…

Q: Use the pHet simulation Isotopes to determine 2 stable isotopes for 3 of the above elements listed…

A: The periodic table is a tabular arrangement of chemical elements, organized based on their atomic…

Q: tudent is studying the ways different elements are similar to one another. Diagrams of atoms from…

A: The  element  belong to same group have same number of electron  in outermost shell .

Q: Does fluorine, sulfur, and phosphorus represent elements in a group, a period, or neither?

A: We have to explain if fluorine, sulfur and phosphorus represent elements in a group, a period, or…

Q: What is the symbol of potassium

A: Given,  The symbol of potassium is:

Q: The ion with 91 electrons, 148 neutrons, and a 4+ charge

A: Given: No. of electrons = 91 No. of neutrons = 148 Charge = +4

Q: Is an igneous rock a mixture compound or element or none of the above.

A: Igneous rocks are formed by the solidification of the molten lava present in the earth crust.

Q: Is hydrogen metal nonmetal metalloid

A: Answer= non-metal.

Q: Based on the information below, what is the elemental symbol of this ion if it has 26 electrons?

A: A chemical or atomic symbol can be defined as the notation of one or more letters which are used to…

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

A: Given that the elements of the group has 1. two valence electrons  2. solid at room temperature. So,…

Q: Question 14 Which statement about isotopes of the same element is NOT correct? O The all have the…

A: Isotopes are elements having same atomic number but different mass number.(i.e. same number of…