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Chapter 4: Q. 4.95 (page 132)

Complete the following statement: (4.2,4.3)

a. The atomic number gives the number of _______ in the nucleus.

b. In an atom, the number of electrons is equal to the number of _______.

c. Sodium and potassium are examples of elements called________.

Short Answer

Expert verified

a. Protons.

b. Protons.

c. Alkali metals.

Step by step solution

01

Part (a) step 1: Given Information

We need to complete the statement is the atomic number gives the number of _______ in the nucleus.

02

Part (a) step 2: Explanation

Now,

The atomic number gives the number of protons in the nucleus.

03

Part (b) step 1: Given Information

We need to complete the statement is in an atom, the number of electrons is equal to the number of _______.

04

Part (b) step 2: Explanation

Here,

In an atom, the number of electrons is equal to the number ofprotons.

05

Part (c) step 1: Given Information

We need to complete the statement is sodium and potassium are examples of elements called________.

06

Part (c) step 2: Explanation

Here,

Sodium and potassium are examples of elements called alkali metals.

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Most popular questions from this chapter

Match the spheres A through D with atoms of LI, Na, K, and Rb. 4.7

a. How many neutrons are in K-41?

b. Write the electron arrangement for potassium.

c. Which is the larger atom. Kor Cs?

d. Which is the smallest atom, K,As,or Br?

e. If John's potato field has an area of 34.5hectares. How many pounds of fertilizer does John need to use?

Why is the ionization energy of CI lower than F, but higher than that of S?

How many protons and electrons are there in a neutral atom of each of the following elements?

a. carbon

b. fluorine

c. tin

d. nickel

According to Dalton's atomic theory, which of the following are true or false? If false, correct the statement to make it true. (4.3)

a. Atoms of an element are identical to atoms of other elements.

b. Every element is made of atoms.

c. Atoms of different elements combine to form compounds.

d. In a chemical reaction, some atoms disappear and new atoms appear.
See all solutions

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